Ever Cared to retain shine of your silver wares? please take these steps to retain the SHINE for Long time
silver will oxidize. Properly maintained silver actually improves with age. It develops a lush patina when treated well.
1. Simply clean with a mild soap and water solution. Pat dry with a soft cloth. If dirt is more stubborn a silver cleaner is appropriate. But don't rub silver with anything other than a polishing cloth or fine piece of felt. Tissue paper or paper towels will cause scratches.
2. Like other jewellery, avoid wearing silver in chlorinated water as this will discolour it.
3. Store your silver jewellery in a cool, dry, dark place. A tarnish preventative bag is a good idea, or wrapped individually in a soft piece of felt or cloth.
4. As air and light cause silver to tarnish, the less of them the better when stored.
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Showing posts with label Maintanance. Show all posts
Showing posts with label Maintanance. Show all posts
Gemstone Care & Maintanance
Retaining the finish and value of your gemstone jewellery is quite easy. It's simply a matter of knowing what and what not to do.
1. The best single piece of advise is to wipe your precious stone jewellery with a clean, soft damp cloth after wearing. This little habit will ensure that your jewellery is always looking its best.
2. When your gemstone jewellery is not being worn, storage in a soft pouch is recommended.
3. There are some things to avoid.
- Salt water and harsh chemicals such as chlorine bleach or detergents can cause damage. The chemicals erode the finish and polish of the gems leaving them dull.Hairspray, perfume and perspiration can also cause dullness if not regularly cleaned off.
4. Because gemstones differ so much, so do their cleaning procedures. It really is best to have your Showcase jeweller advise you on them individually. We can also check its condition and advise you of any repairs that may be necessary to restore its full beauty and value.
1. The best single piece of advise is to wipe your precious stone jewellery with a clean, soft damp cloth after wearing. This little habit will ensure that your jewellery is always looking its best.
2. When your gemstone jewellery is not being worn, storage in a soft pouch is recommended.
3. There are some things to avoid.
- Salt water and harsh chemicals such as chlorine bleach or detergents can cause damage. The chemicals erode the finish and polish of the gems leaving them dull.Hairspray, perfume and perspiration can also cause dullness if not regularly cleaned off.
4. Because gemstones differ so much, so do their cleaning procedures. It really is best to have your Showcase jeweller advise you on them individually. We can also check its condition and advise you of any repairs that may be necessary to restore its full beauty and value.
Retain DIAMOND's Brilliance (Diamond's Care)
Caring for diamonds is best not left to trial and error. Knowing what and what not to do ensures the lasting brilliance of your diamond jewellery.
1. Because diamonds can easily scratch other jewellery, even other diamonds, the best single piece of advice is to keep your diamond jewellery in a fabric lined jewellery case with dividers.
2. It's not wise to wear a diamond ring when doing rough work. It's hard but it can be chipped.
3. Chlorine bleach can pit and discolour the mounting. Lotions, powders, soaps and even your natural skin oils can put a film on diamonds that cut down their brilliance. But this can be easily rectified. It's simply a matter of cleaning your diamonds fairly regularly.
4. There are commercial jewellery cleaners and ultrasonic ones that clean with a high frequency turbulence.
5. It's smart to have jeweller check wear and tear on the mounting at least once a year.
Source - Popular Websites
1. Because diamonds can easily scratch other jewellery, even other diamonds, the best single piece of advice is to keep your diamond jewellery in a fabric lined jewellery case with dividers.
2. It's not wise to wear a diamond ring when doing rough work. It's hard but it can be chipped.
3. Chlorine bleach can pit and discolour the mounting. Lotions, powders, soaps and even your natural skin oils can put a film on diamonds that cut down their brilliance. But this can be easily rectified. It's simply a matter of cleaning your diamonds fairly regularly.
4. There are commercial jewellery cleaners and ultrasonic ones that clean with a high frequency turbulence.
5. It's smart to have jeweller check wear and tear on the mounting at least once a year.
Source - Popular Websites
2nd way to clean costume jewelry
Wondering how to keep your fragile or fine costume jewelry clean? There are plenty of products specifically geared for cleaning costume jewelry. You need to make sure that the cleaner doesn’t contain ammonia, vinegar, or any other acids or alcohols. Read the label and make sure you are using a cleaner safe for whatever material your costume jewelry is made from (silver, gold, brass, bronze, copper, chrome, stainless steel, aluminum, pearls, opals, marble and any gems.)
Don’t use soap and water, because most soaps will leave a residue on the metal and make the stones look dull. Windex can damage delicate stones and finishes. Vinegar is also harmful to the gemstones.
To simply get the dust and dirt off of your costume jewelry, use the softest toothbrush that you can find. Or use a very soft cloth to clean the surface of stones and gold or silver. You’ll want that costume jewelry shining to the best of its ability!
You must thoroughly dry all of your jewelry adornments after cleaning! Keep moisture away from stored jewelry also, because dampness is a culprit that encourages verdigris, rust, pitting of plated metals, and other damaging conditions.
When researching how to clean costume jewelry, it’s also important to find out how often you should clean your jewelry. If you wear it daily or pretty often, then clean your jewelry weekly. For items that you pull out of the jewelry box and wear it only once for special occasions, clean them after you’ve worn them or just before you put them back into storage. To avoid scratching your costume jewelry and other jewelry items, keep them separated from each other in a box, pouch, or cloth.
Courtesy - www.silverflake.com
Don’t use soap and water, because most soaps will leave a residue on the metal and make the stones look dull. Windex can damage delicate stones and finishes. Vinegar is also harmful to the gemstones.
To simply get the dust and dirt off of your costume jewelry, use the softest toothbrush that you can find. Or use a very soft cloth to clean the surface of stones and gold or silver. You’ll want that costume jewelry shining to the best of its ability!
You must thoroughly dry all of your jewelry adornments after cleaning! Keep moisture away from stored jewelry also, because dampness is a culprit that encourages verdigris, rust, pitting of plated metals, and other damaging conditions.
When researching how to clean costume jewelry, it’s also important to find out how often you should clean your jewelry. If you wear it daily or pretty often, then clean your jewelry weekly. For items that you pull out of the jewelry box and wear it only once for special occasions, clean them after you’ve worn them or just before you put them back into storage. To avoid scratching your costume jewelry and other jewelry items, keep them separated from each other in a box, pouch, or cloth.
Courtesy - www.silverflake.com
How to Clean Costume Jewelry
Keeping costume jewelry in excellent shape takes only a little bit of time and effort. If the jewelry is worn everyday, then cleaning must take place often. If jewelry is only worn once in a while, then preserving during periods of nonuse is the key. Costume jewelry, especially vintage or family heirlooms, take particular care.
Things You’ll Need:
• Cotton swabs
• Baby toothbrush
• Wooden toothpick
• Cleaning solution
Step1
Choose a good cleaning solution. Avoid alcohols and acids like ammonia and vinegar. Read the label of the cleaning solution to make sure it can be used with the metal being cleaned.
Step2
Use the solution to clean smudges from gemstones and glass. Dab a minimal amount of solution onto a cotton swab, and gently buff the dirty spot. Never soak jewelry in the solution, because moisture breaks down glue, welding and other adhesives bonding jewelry together.
Step3
Use a baby toothbrush to gently brush off the jewelry to prevent scratching. The toothbrush will buff and dust the metal parts of the jewelry.
Step4
Pick residue out of encrusted areas with a toothpick. Wooden toothpicks are best, since they are gentle and will not scratch the jewelry.
Step5
Dry quickly to avoid rusting. Dab the jewelry with a towel. For extra care, blow dry with a hair dryer on a cool air setting
Things You’ll Need:
• Cotton swabs
• Baby toothbrush
• Wooden toothpick
• Cleaning solution
Step1
Choose a good cleaning solution. Avoid alcohols and acids like ammonia and vinegar. Read the label of the cleaning solution to make sure it can be used with the metal being cleaned.
Step2
Use the solution to clean smudges from gemstones and glass. Dab a minimal amount of solution onto a cotton swab, and gently buff the dirty spot. Never soak jewelry in the solution, because moisture breaks down glue, welding and other adhesives bonding jewelry together.
Step3
Use a baby toothbrush to gently brush off the jewelry to prevent scratching. The toothbrush will buff and dust the metal parts of the jewelry.
Step4
Pick residue out of encrusted areas with a toothpick. Wooden toothpicks are best, since they are gentle and will not scratch the jewelry.
Step5
Dry quickly to avoid rusting. Dab the jewelry with a towel. For extra care, blow dry with a hair dryer on a cool air setting
How to clean pearl jewelry
Back when I worked at a jewelry store, a panicked bride came running to me, sobbing. Her mother had given her a set of pearls to wear on her wedding day that had been handed down through generations of women in her family, all of whom wore these special pearls at their weddings. Since the necklace was many decades old, the bride decided to give the pearls a bath -- following the instructions on her jewelry cleaner, she proceeded to ruin her wedding necklace.
Pearls are one of the most fragile gemstones out there. Real pearls are especially delicate, but even simulated ones won't always hold up to standard cleaning methods, as cleansers can cause the dye to flake off or discolor. Whether your pearls are natural or faux, you need to be careful when you clean them, just as you are careful when you wear and store them.
To clean pearls, do not use standard ammonia-based cleansers. Instead, fix a bowl of warm, soapy water, and get an old, soft toothbrush to very gently scrub the pearls. Pat them dry with a soft cloth or towel when you are finished, and they're ready to go. If this doesn't do the trick, take them to a jeweler for a better wash.
If you do accidentally wash the dye right off your faux pearls, it's not easy to re-dye them, because most paints won't stick to the surface of the beads. The one thing that we've learned actually works is shoe dye -- but please don't try this on natural pearls!
Courtesy - wal-land
Pearls are one of the most fragile gemstones out there. Real pearls are especially delicate, but even simulated ones won't always hold up to standard cleaning methods, as cleansers can cause the dye to flake off or discolor. Whether your pearls are natural or faux, you need to be careful when you clean them, just as you are careful when you wear and store them.
To clean pearls, do not use standard ammonia-based cleansers. Instead, fix a bowl of warm, soapy water, and get an old, soft toothbrush to very gently scrub the pearls. Pat them dry with a soft cloth or towel when you are finished, and they're ready to go. If this doesn't do the trick, take them to a jeweler for a better wash.
If you do accidentally wash the dye right off your faux pearls, it's not easy to re-dye them, because most paints won't stick to the surface of the beads. The one thing that we've learned actually works is shoe dye -- but please don't try this on natural pearls!
Courtesy - wal-land
Crystal Cleansing
When you buy a new crystal, it is recommended that you do crystal cleansing to neutralize the vibrations left by other people. After restoring the crystal to it's original clarity, you can then impress your own pure intentions upon it. Do crystal cleansing periodically especially if your crystals are used for healing to clear away all negativity.
Crystal Cleansing Tips
Sea Salt: Bury your crystal in dry sea salt in a small container for between 7 - 24 hours. Dont's use salt water because it can discolouring the crystal.
Sun & Water: Put the crystal in running water for a few minutes and then place in the sun to dry. Only recommended for crystals not susceptible to fading.
Music: The vibrations of a pure sound can energetically cleanse a crystal and remove the feeling of unpleasantness.
Crystals: Crystal clusters can be used to cleanse crystals. Place your crystals in the center of your cluster for hours and they will be completely cleansed.
Source : Crystalpalace
Crystal Cleansing Tips
Sea Salt: Bury your crystal in dry sea salt in a small container for between 7 - 24 hours. Dont's use salt water because it can discolouring the crystal.
Sun & Water: Put the crystal in running water for a few minutes and then place in the sun to dry. Only recommended for crystals not susceptible to fading.
Music: The vibrations of a pure sound can energetically cleanse a crystal and remove the feeling of unpleasantness.
Crystals: Crystal clusters can be used to cleanse crystals. Place your crystals in the center of your cluster for hours and they will be completely cleansed.
Source : Crystalpalace
Crystal Cleaning
Wash crystal gently in water with a little salt. After that rinse them in clean water, and dry. Polishing it with a jewellers cloth if you like your crystals super shiny.
Bonding and Programming Your Crystal
Find a quite place and hold the crystal in both hands, try to feel it with your mind, concentrate on what you want to program into the crystal. This process takes a few minutes.
You can assign your crystals any purpose or desire that you have. The vibration is stored there until you replace it with a new intention.
Source - CrystalPalace
Bonding and Programming Your Crystal
Find a quite place and hold the crystal in both hands, try to feel it with your mind, concentrate on what you want to program into the crystal. This process takes a few minutes.
You can assign your crystals any purpose or desire that you have. The vibration is stored there until you replace it with a new intention.
Source - CrystalPalace
Care For Your Jewellery
1. Always remove jewelry before showering or bathing and never swim with jewelry (chlorine is damaging) If exposed to water, make sure you dry it immediately.
2. Swarovski Crystals and Pearls may be damaged by direct contact with sprays such as hairsprays, perfumes, deodorants or detergents and salt water. Do keep your jewelry away from dust and dirt.
3. Store jewelry in soft cloth or soft pouches separately. Moisture, especially in an enclosed storage space, will tarnish sterling silver, loosen jeweler cement (used for stone setting) and weaken springs and clasps. Anti-tarnish paper is ideal to store with your jewelry.
4. Never use toothpaste or baking soda to clean your costume jewelry... This is too abrasive!
5. To clean jewelry use warm water and a PH balanced soap. Dry thoroughly.
6. If you purchase a commercial cleaning agent, make sure the label states it is safe for gemstones. If you are ever in question about how to clean a certain piece of jewelry, see a reputable jeweler.
7. Do not wash simulated pearls. They should be buffed with a soft cloth.
8. Precious and semi-precious gem stones and beads are porous. The natural minerals these gem stones are made of can chip or crack. Be careful not to hit them on hard surfaces when storing or wearing your gem stone jewelry. Do not expose this jewelry to high temperatures like saunas.
9. Do not use sonic cleaners, boiling water or ammonia cleaners.
10. Enjoy your jewelry, but care for each piece like an old friend.
Source - Web
2. Swarovski Crystals and Pearls may be damaged by direct contact with sprays such as hairsprays, perfumes, deodorants or detergents and salt water. Do keep your jewelry away from dust and dirt.
3. Store jewelry in soft cloth or soft pouches separately. Moisture, especially in an enclosed storage space, will tarnish sterling silver, loosen jeweler cement (used for stone setting) and weaken springs and clasps. Anti-tarnish paper is ideal to store with your jewelry.
4. Never use toothpaste or baking soda to clean your costume jewelry... This is too abrasive!
5. To clean jewelry use warm water and a PH balanced soap. Dry thoroughly.
6. If you purchase a commercial cleaning agent, make sure the label states it is safe for gemstones. If you are ever in question about how to clean a certain piece of jewelry, see a reputable jeweler.
7. Do not wash simulated pearls. They should be buffed with a soft cloth.
8. Precious and semi-precious gem stones and beads are porous. The natural minerals these gem stones are made of can chip or crack. Be careful not to hit them on hard surfaces when storing or wearing your gem stone jewelry. Do not expose this jewelry to high temperatures like saunas.
9. Do not use sonic cleaners, boiling water or ammonia cleaners.
10. Enjoy your jewelry, but care for each piece like an old friend.
Source - Web
Cleaning Gold Coins
General advice is do not clean coins. The main reason many coins have been ruined by poor or aggressive cleaning If you have found a gold coin you are thinking of selling, definitely do not clean it, leave it to the buyer. the buyer, whether a dealer or collector may prefer to buy an uncleaned coin in which case he may pay more for it. If he prefers it cleaned, he will probably know how do it. Why do extra work and risk getting a lower price?
Avoid Abrasives & Rubbing
One of the worst things you can do to most coins including gold ones is to use an abrasive. Most metal polishes, such as Brasso, contain abrasives. these put tiny scratches on the surface on the coin, most collectors and dealers dislike scratched coins, or ones which look polished.
One other source of abrasion is rubbing or wiping coins dry after cleaning them. It is very easy to put scratches on your coin by any form of rubbing. If any grit is present, it will make scratches. Even an apparently soft cloth can leave tiny scratches on the surface of coins. Because gold is quite soft it is easily scratched. If you need to dry a coin after cleaning, make sure you dab it dry. If you have a steam cleaner or some other air blower such as a hair dryer, this may help, although it is still possible to leave patchy drying marks on the surface of a coin.
Best Way to Clean Gold Coins
If you have a gold coin which is dirty, it can be safely cleaned using soap, or detergent, and water. Sometimes when we get a particularly grubby batch of gold sovereigns, we put them in a pan of water, give them a squirt of "Fairy Liquid", and leave them boiling gently for as long as it takes. Don't allow the pan to boil dry or you may find all the coins have turned black, and have burnt-on soap residue on them. Dry them gently as described above.
If you have an ultrasonic tank, you can use this. Ultrasonic tanks work by gently vibrating the coins in soapy water, often a proprietary cleaning solution. Because the action is gentle, it should not harm your coins. It is very similar to boiling in soapy water but the sound waves provide the agitation to loosen any dirt instead of the boiling action.
Removing Stains
Stains can be removed. How depends on what has caused the stain. Solvents such as acetone or nail varnish remover will work well for removing many stains. This will also remove adhesive tape residues, it is surprising how many people use Sellotape to stick coins to a piece of paper or card either for storage or to send through the post. Obviously it is best to avoid sticking anything to your coins, as it will often leave a mark which may disfigure the coin.
Rust Stains and Red Spots
We sometimes see gold coins which have rust stains on them. Mention this to most people and their jaw drops open, because they are about to say that gold doesn't go rusty. Of course not, but it sometimes gets stored in steel boxes in safes or deposit boxes. If these are then stored in damp or humid conditions, the box may rust, and this can stain the coins if it comes into contact with them. The rust stain can be dissolved using almost any acid, even quite weak one such as lemon juice, vinegar, or the carbonic acid present in fizzy drinks. Obviously these may leave the surface of the coin sticky, but this can be rinsed off. If rust stains are persistent, you could try using a stronger or more concentrated acid (strength and concentration are not the same thing), such as we describe in our page about red spot.
Proof Coins
Because proof coins have a very highly polished surface, it is easy to spoil this finish by careless cleaning, in fact almost any contact can detract from the near perfection of a proof coin. Our comments about drying carefully and avoiding rubbing are particularly important for proof coins. As you will know, even touching the surface of proof coins, will usually leave a greasy fingerprint. If you are trying to remove fingerprints, a solvent such as acetone should work. Obviously it is better to avoid fingerprints in the first place, and if in any doubt, its probably best to avoid trying to clean proof gold coins.
If using solvents, do be careful to work in a well ventilated space.
Courtesy - taxfreegold.co.uk
Avoid Abrasives & Rubbing
One of the worst things you can do to most coins including gold ones is to use an abrasive. Most metal polishes, such as Brasso, contain abrasives. these put tiny scratches on the surface on the coin, most collectors and dealers dislike scratched coins, or ones which look polished.
One other source of abrasion is rubbing or wiping coins dry after cleaning them. It is very easy to put scratches on your coin by any form of rubbing. If any grit is present, it will make scratches. Even an apparently soft cloth can leave tiny scratches on the surface of coins. Because gold is quite soft it is easily scratched. If you need to dry a coin after cleaning, make sure you dab it dry. If you have a steam cleaner or some other air blower such as a hair dryer, this may help, although it is still possible to leave patchy drying marks on the surface of a coin.
Best Way to Clean Gold Coins
If you have a gold coin which is dirty, it can be safely cleaned using soap, or detergent, and water. Sometimes when we get a particularly grubby batch of gold sovereigns, we put them in a pan of water, give them a squirt of "Fairy Liquid", and leave them boiling gently for as long as it takes. Don't allow the pan to boil dry or you may find all the coins have turned black, and have burnt-on soap residue on them. Dry them gently as described above.
If you have an ultrasonic tank, you can use this. Ultrasonic tanks work by gently vibrating the coins in soapy water, often a proprietary cleaning solution. Because the action is gentle, it should not harm your coins. It is very similar to boiling in soapy water but the sound waves provide the agitation to loosen any dirt instead of the boiling action.
Removing Stains
Stains can be removed. How depends on what has caused the stain. Solvents such as acetone or nail varnish remover will work well for removing many stains. This will also remove adhesive tape residues, it is surprising how many people use Sellotape to stick coins to a piece of paper or card either for storage or to send through the post. Obviously it is best to avoid sticking anything to your coins, as it will often leave a mark which may disfigure the coin.
Rust Stains and Red Spots
We sometimes see gold coins which have rust stains on them. Mention this to most people and their jaw drops open, because they are about to say that gold doesn't go rusty. Of course not, but it sometimes gets stored in steel boxes in safes or deposit boxes. If these are then stored in damp or humid conditions, the box may rust, and this can stain the coins if it comes into contact with them. The rust stain can be dissolved using almost any acid, even quite weak one such as lemon juice, vinegar, or the carbonic acid present in fizzy drinks. Obviously these may leave the surface of the coin sticky, but this can be rinsed off. If rust stains are persistent, you could try using a stronger or more concentrated acid (strength and concentration are not the same thing), such as we describe in our page about red spot.
Proof Coins
Because proof coins have a very highly polished surface, it is easy to spoil this finish by careless cleaning, in fact almost any contact can detract from the near perfection of a proof coin. Our comments about drying carefully and avoiding rubbing are particularly important for proof coins. As you will know, even touching the surface of proof coins, will usually leave a greasy fingerprint. If you are trying to remove fingerprints, a solvent such as acetone should work. Obviously it is better to avoid fingerprints in the first place, and if in any doubt, its probably best to avoid trying to clean proof gold coins.
If using solvents, do be careful to work in a well ventilated space.
Courtesy - taxfreegold.co.uk
How to Clean Gold Jewelry
Gold doesn't tarnish, but it can be dirtied or dulled by the oil in your skin, body lotion, makeup or other substances. There are lots of products out there that promise to clean gold, but you can do it easily with mild detergent and a soft cloth.
Things You’ll Need:
-Soft Toothbrush
-mild dish detergent
-soft polishing cloth
Step 1:
Mix a squeeze of mild dish detergent with warm water in a bowl.
Step 2:
Put the gold item into the soap mixture and let sit for a few minutes.
Step 3:
Use a soft toothbrush to gently scrub the jewelry.
Step 4:
Remove item from soapy water, rinse it and dry thoroughly with a soft polishing cloth.
Tips & Warnings
It is wise to check clasps, mountings, prongs and posts for damage before washing the jewelry. If you find a problem, take the item to a jeweler for repair.
Always be sure gold jewelry is completely dry before storing it.
Never use a harsh or abrasive cleaner, a stiff brush or a scouring pad on gold.
Courtesy – ehow.com
Things You’ll Need:
-Soft Toothbrush
-mild dish detergent
-soft polishing cloth
Step 1:
Mix a squeeze of mild dish detergent with warm water in a bowl.
Step 2:
Put the gold item into the soap mixture and let sit for a few minutes.
Step 3:
Use a soft toothbrush to gently scrub the jewelry.
Step 4:
Remove item from soapy water, rinse it and dry thoroughly with a soft polishing cloth.
Tips & Warnings
It is wise to check clasps, mountings, prongs and posts for damage before washing the jewelry. If you find a problem, take the item to a jeweler for repair.
Always be sure gold jewelry is completely dry before storing it.
Never use a harsh or abrasive cleaner, a stiff brush or a scouring pad on gold.
Courtesy – ehow.com
General Safeguards
While your jewellery is not being worn, it is best stored in a lined box or soft pouch, similar too, if not the one you had, when the item was purchased. Necklaces shouldn't be allowed to become tangled and metal or diamonds can easily scratch other metals or plate, just by being next to each other.
This can ruin or dull a polished surface very quickly, with the obvious disappointment and loss in value that will be the result.
Dont wear jewels while gardening, doing housework, or playing any kind of sport, in particular swimming. Jewellery is particularly susceptible to damage from the effects of chemicals present in perfume, hairspray, nail polish remover and deodorant.
If a lost ring or earring is trodden into the lawn, it can be a hundred years before it's found. Likewise, rings can all too easily slip off soapy or sweaty hands and be lost forever.
Your local swimming baths are especially destructive to expensive jewellery as the chlorine found in the water can cause surface damage. Gold and silver hate chlorine which was an active ingredient introduced during the refining process to separate the base metals in the melting crucible.
Courtesy - popular sites
This can ruin or dull a polished surface very quickly, with the obvious disappointment and loss in value that will be the result.
Dont wear jewels while gardening, doing housework, or playing any kind of sport, in particular swimming. Jewellery is particularly susceptible to damage from the effects of chemicals present in perfume, hairspray, nail polish remover and deodorant.
If a lost ring or earring is trodden into the lawn, it can be a hundred years before it's found. Likewise, rings can all too easily slip off soapy or sweaty hands and be lost forever.
Your local swimming baths are especially destructive to expensive jewellery as the chlorine found in the water can cause surface damage. Gold and silver hate chlorine which was an active ingredient introduced during the refining process to separate the base metals in the melting crucible.
Courtesy - popular sites
Gems Cleaning
Modes:
Ultrasound: never.
Steam: never.
Warm water and
neutral soap: safe.
Stability
Reaction to heat: sharp changes in temperature can lead to breaking, cracking, or fracturing of the opal, excessive heating can change a white opal to brown and remove the colour effect.
Stability with light: relatively stable.
Reaction to chemical
agents: affected by hydrofluoric acid and corrosive alkalis.
Ultrasound: never.
Steam: never.
Warm water and
neutral soap: safe.
Stability
Reaction to heat: sharp changes in temperature can lead to breaking, cracking, or fracturing of the opal, excessive heating can change a white opal to brown and remove the colour effect.
Stability with light: relatively stable.
Reaction to chemical
agents: affected by hydrofluoric acid and corrosive alkalis.
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