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Gem Care and Handling
Although gemstones are among the most
durable of substances, they do need some care. Following a few general rules
will make sure that they last for generations still looking like the day you
bought them.
First of all: keep them clean! Rings in particular tend to collect dust and soap
behind the stone, particularly if you wear them all the time. To clean
transparent crystalline gemstones, simply soak them in water with a touch of
gentle soap. If necessary, use a soft toothbrush to scrub behind the stone.
Even the hardest gemstone variety can be vulnerable to breakage if it has
inclusions that weaken the crystal structure. Exercise common sense: if you have
a ring set with a softer gem variety or an included stone, take it off before
strenous exercise.
Diamonds are very hard but can shatter in two with a single well-placed blow.
Rubies and sapphires are the toughest gems but even they can chip if hit
sharply.
Think twice before putting gems in an ultrasonic cleaner. Diamonds and rubies
and sapphires will be fine but many other gems may not be: when in doubt, leave
it out. Diamonds, rubies and sapphires, and other single-crystal gems can be
cleaned with a touch of ammonia in water to remove all films and add extra
sparkle.
Opaque gemstones like lapis lazuli, turquoise, malachite, require special care.
Never use an ultrasonic cleaner and never use ammonia or any chemical solution.
These gem materials should just be wiped clean gently with a moist cloth. These
gemstones can be porous and may absorb chemicals, even soap, and they may build
up inside the stone and discolor it.
The reason why these materials need more care than transparent gemstones is that
these materials are essentially rocks, not crystals of a single mineral. Think
about it: when you put a rock in water, it absorbs the water and is moist all
the way through. A single crystal gem like sapphire will not absorb water: all
the molecules are lined up so tightly in the crystal that there is no room for
water to enter.
Opals also require special care. Never use an ultrasonic, never use ammonia, and
avoid heat and strong light which can dry out the water in opals.
Organic gems like pearls, coral, and amber should only be wiped clean with a
moist cloth. Due to their organic nature, these gems are both soft and porous.
Be careful about chemicals in hairspray, cosmetics, or perfume: they can, over
time, damage pearls in particular.
Store each piece of gemstone jewelry separately so that harder stones don't
scratch softer ones. Almost every gemstone is much harder than the metal it is
set in. Gems can scratch the finish on your gold, silver or platinum if you
throw your jewelry in a heap in a drawer or jewelry box.
Please use care in cleaning your
jewelry. We cannot accept liability for any damage you may cause.
Dirt may be holding in some gems! Clean in a small bowl, and check
carefully for dislodged stones.
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Alexandrite |
Generally
stable to light, heat & chemicals. Do not boil. Sonic OK, ultrasonic
with care (jewelers only). |
Jade (Jadeite
& Nephrite) |
Often
polished with wax finish. Other- wise, very tough. Avoid high heat,
solvents, acids & strong light. Soak briefly in ammonia, brush &
Water-Pik. |
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Amber |
Easily
damaged by heat, pressure, and chemicals. Wipe or soak in soapy
water. Do not ultrasonic. |
Kunzite (Spodumene) |
Do not boil
or ultrasonic. Heat & strong light can change color. Soak in
ammonia, rinse & brush. Avoid hydrofluoric acid. |
|
Amethyst |
Avoid strong
heat & abrupt temperature changes. Boiling & ultrasonic should be
done with care not to "shock" stone. Soak in ammonia & brush. |
Lapis Lazuli |
Do not boil
or ultrasonic. Often dyed. Avoid heat, solvents, acids, strong
detergents. Clean gently with soapy water. |
|
Andalusite |
Ultrasonic
OK. Do not boil. |
Malachite |
Do not boil
or ultrasonic. Avoid heat, solvents, acids. Clean gently with soapy
water. |
|
Apatite |
Heat & strong
light can cause color to change or fade. Do not boil. No ultrasonic.
|
Opal |
Very delicate
& heat sensitive. Do not boil or ultrasonic. Avoid all solvents,
acids, heat, abrasion. Brush with soapy water; brush accent gems. |
|
Aquamarine (Beryl) |
Do not boil. Ultrasonic with caution: jewelers should check for
inclusions. Sonic OK. Acids can cause damage, especially
hydrofluoric. Soak in ammonia, brush. Brush accent gems & Water-Pik
with warm, soapy water. |
Pearls |
Organic;
avoid chemicals, hair spray, perfume, perspiration. Very soft. Do
not boil or ultrasonic. Wipe with soft, damp cloth after wearing. Do
not store in safe deposit box for long periods. Need light. |
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Beryl |
Peridot |
May fracture
if heat-shocked. Do not ultrasonic. Boil with care. Damaged by
acids. Soak in ammonia & brush clean. |
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Cat’s Eye (Chrysoberyl) |
Generally
stable. Avoid boiling and ultrasonic; sonic cleaning is OK. |
Quartz |
Avoid strong
heat & abrupt temperature changes. Boiling & ultrasonic should be
done with care not to "shock" stone. Soak in ammonia & brush. |
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Citrine (Quartz) |
Strong heat
(jewelers torch) may destroy color. Boiling and ultrasonic cleaning
best done carefully, by jeweler. Soak in ammonia, brush, Water-Pik. |
Ruby & Sapphire (Corundum) |
Boiling and
ultrasonic generally safe. Soak in ammonia & brush. Water-Pik with
hot, soapy water. May have glass-filled cavities that could be
dislodged. |
|
Coral |
Organic
material, soft & often dyed. Do not boil, ultrasonic or use
chemicals. Clean with soapy water. Brush accent stones & clean with
Water-Pik. |
Spinel |
Boiling OK;
avoid heat shock. Sonic cleaning OK; ultrasonic with care. Jewelers’
torch may fade light colors. Soak, brush & Water-Pik. |
|
Diamond |
Untreated
diamonds OK to boil & ultra- sonic. Soak in ammonia, brush & Water-Pik.
Fracture-filled diamonds must be treated with care. Jeweler’s torch
can remove fillings—let him know if you know your diamond is filled! |
Tanzanite (Zoisite) |
Do not boil
or ultrasonic. Will fracture if shocked. Damaged by hydrofluoric &
hydrochloric acids. Soak in ammonia & brush, Water-Pik accent
stones.. |
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Diopside |
Do not boil
or ultrasonic; do not expose to hydrofluoric acid. Very
heat-sensitive. Soak in ammonia, brush. |
Topaz |
Do not boil
or ultrasonic. Fractures if shocked. Soak in ammonia & brush; clean
accent stones with Water-Pik. |
|
Emerald (Beryl) |
Use extreme
care. Usually filled with oil or resins that might be removed with
cleaning. (Fillings can be restored.) Do not boil or ultrasonic.
Rinse, brush & Water-Pik with warm, soapy water. |
Turquoise |
Do not boil
or ultrasonic. Attacked by acids. Cosmetics or perspiration may
discolor stone. Many are dyed or "stabilized" with resins. Brush
with ammonia, rinse & dry. |
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Garnet |
Gentle
boiling OK if temperature "shock" avoided. Ultrasonic with care.
Sonic OK. Jewelers- avoid hydrofluoric acid & torch. Soak in
ammonia, brush. |
Zircon |
Do not boil;
ultrasonic OK. High heat or strong light could change color. Easily
abraded—handle with care. Soak in ammonia, brush & Water-Pik. |
|
Iolite |
Gentle
boiling & ultrasonic OK. Avoid thermal shock. Acids can damage. Soak
in ammonia, brush, Water-Pik. |
Note: |
If in doubt,
let the appraiser clean your jewelry. Remember that cleaning might
loosen stones—check carefully. |
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