Gemstone Chart

Hover over your favourite gem and learn a little more about it.

  • Alexandrite

    Alexandrite

    Generally stable to light, heat & chemicals. Do not boil. Ultrasonic with care (jewellers only).

  • Jade

    Jade

    Often polished with wax finish. Other- wise, very tough. Avoid high heat, solvents, acids & strong light. Soak briefly in ammonia, brush & rinse.

  • Amber

    Amber

    Easily damaged by heat, pressure, and chemicals. Wipe or soak in soapy water. Do not ultrasonic.

  • Kunzite

    Kunzite

    (Spodumene) Do not boil or ultrasonic. Heat & strong light can change color. Soak in ammonia, rinse & brush. Avoid hydrofluoric acid.

  • Amethyst

    Amethyst

    Avoid strong heat & abrupt temperature changes. Boiling & ultrasonic should be done with care not to "shock" stone. Soak in ammonia & brush.

  • Lapis Lazuli

    Lapis Lazuli

    Do not boil or ultrasonic. Often dyed. Avoid heat, solvents, acids, strong detergents. Clean gently with soapy water.

  • Andalusite

    Andalusite

    Ultrasonic OK. Do not boil.

  • Malachite

    Malachite

    Do not boil or ultrasonic. Avoid heat, solvents, acids. Clean gently with soapy water.

  • Apatite

    Apatite

    Heat & strong light can cause color to change or fade. Do not boil.

  • Opal

    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)

    Aquamarine (Beryl)

    Ultrasonic with caution: jewellers should check for inclusions. Soak in ammonia, brush. Brush accent gems & rinse with warm, soapy water.

  • Pearls

    Pearls

    Organic; avoid chemicals, hair spray, perfume, perspiration. Very soft. Do not boil or ultrasonic. Wipe with soft, damp cloth after wearing.

  • Beryl

    Beryl

    Ultrasonic with caution: jewellers should check for inclusions. Soak in ammonia, brush. Brush accent gems & Rinse with warm, soapy water.

  • Peridot

    Peridot

    May fracture if heat-shocked. Do not ultrasonic. Boil with care. Damaged by acids. Soak in ammonia & brush clean.

  • Cat’s Eye (Chrysoberyl)

    Cat’s Eye (Chrysoberyl)

    Generally stable. Avoid boiling and ultrasonic.

  • Quartz

    Quartz

    Avoid strong heat & abrupt temperature changes. Boiling & ultrasonic should be done with care not to "shock" stone. Soak in ammonia & brush.

  • Citrine (Quartz)

    Citrine (Quartz)

    Strong heat (jewellers torch) may destroy color. Boiling and ultrasonic cleaning best done carefully, by jeweller. Soak in ammonia, brush, Rinse.

  • Ruby & Sapphire (Corundum)

    Ruby & Sapphire (Corundum)

    Boiling and ultrasonic generally safe. Soak in ammonia & brush. Rinse with hot, soapy water.

  • Coral

    Coral

    Organic material, soft & often dyed. Do not boil, ultrasonic or use chemicals. Clean with soapy water. Brush accent stones & clean with Rinse.

  • Spinel

    Spinel

    Boiling OK; avoid heat shock. Sonic cleaning OK; ultrasonic with care. Jewellers’ torch may fade light colors. Soak, brush & Rinse.

  • Diamond

    Diamond

    Untreated diamonds OK to boil & ultra- sonic. Soak in ammonia, brush & rinse.

  • Tanzanite (Zoisite)

    Tanzanite (Zoisite)

    Do not boil. Will fracture if shocked. Soak in ammonia & brush, Rinse accent stones.

  • Diopside

    Diopside

    Do not boil or ultrasonic; do not expose to hydrofluoric acid. Very heat-sensitive. Soak in ammonia, brush.

  • Topaz

    Topaz

    Do not boil or ultrasonic. Fractures if shocked. Soak in ammonia & brush; clean accent stones with rinse.

  • Emerald (Beryl)

    Emerald (Beryl)

    Use extreme care.(Fillings can be restored.) Do not boil or ultrasonic. Rinse, brush & Rinse with warm, soapy water.

  • Turquoise

    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.

  • Garnet

    Garnet

    Gentle boiling OK if temperature "shock" avoided. Ultrasonic with care. Sonic OK. Jewelers- avoid hydrofluoric acid & torch. Soak in ammonia, brush.

  • Zircon

    Zircon

    Do not boil; ultrasonic OK. High heat or strong light could change color. Easily abraded—handle with care. Soak in ammonia, brush & Rinse.

  • Lolite

    Lolite

    Gentle boiling & ultrasonic OK. Avoid thermal shock. Acids can damage. Soak in ammonia, brush, rinse.