Alexandrite
Usual Treatments - None
Hardness - 8.5
Color Change
Major Sources - Brazil, Tanzania, Russia

Amethyst
Usual Treatments - Heat
Hardness - 7
Major sources - Africa, South America, Russia,
Mexico, Zambia

Ametrine
Usual Treatments - None
Hardness - 7
Major Source - Bolivia

Aquamarine
Usual Treatments - Heat
Hardness - 7.5 to 8
Major Sources - South America, Africa, China

Chalcedony
Usual Treatments - None
Hardness - 6.5 to 7
Major Sources - Blue: Africa
Lavender: United States

Iolite
Usual Treatments - None
Hardness - 7 to 7.5
Major Sources - India, Tanzania, Brazil, Sri Lanka,
Madagascar, Namibia, Myanmar

Onyx
Usual Treatments - Dyeing
Hardness - 6.5 to 7
Major Sources - Brazil, Madagascar, Uruguay,
United States

Ruby
Usual. Treatments - Heat
Hardness - 9
Major Sources - Thailand, Myanmar, Kampuchea, Sri Lanka, Kenya, India, Afghanistan, Pakistan, Tanzania, Madagascar

Sapphire, Blue
Usual Treatments - Heat
Hardness - 9
Major Sources - Australia, Thailand, Sri Lanka, India,
United States, Kenya, Tanzania, Myanmar, Kampuchea

Tourmaline, Pink
Usual Treatments - Heat, Radiation
Hardness - 7 to 7.5
Major Sources - Brazil, India, Afghanistan, Myanmar, Kenya, Tanzania, United States, Mozambique

Tanzanite
Usual Treatments - Heat
Hardness - 6 to 7
Major Source - Tanzania

Precious Topaz
Usual Treatments - None
Hardness - 8
Major Source - Brazil

Blue Topaz
Usual Treatments - Radiation
Hardness - 8
Major Sources - Brazil, Nigeria, Australia,
Myanmar, Mexico, Namibia, Pakistan, Sri Lanka

Topaz - Color Fusion:
Mystic, Buick, Poppy, Ice Blue
Usual Treatments - Diffusion
Hardness - 8
Major Sources - Brazil, Nigeria, Australia, Myanmar, Mexico, Namibia, Pakistan, Sri Lanka

Garnet
Usual Treatments - None
Hardness - 7 to 7.5
Major Sources - Africa, Sri Lanka, India, East
Africa, Australia, Brazil, United States

Garnet, Tsavorite
Usual Treatments - None
Hardness - 7 to 7.5
Major Sources - Sri Lanka, Kenya, Tanzania, Brazil,
India

Jade, Nephrite
Usual Treatments - None
Hardness - 6.5
Major Sources - Taiwan, Canada, Australia, China,
New Zealand
Fire Opal
Usual Treatments - None
Hardness - 5 to 6.5
Major Source - Mexico

Opal, White & Black
Usual Treatments - None
Hardness - 5 to 6.5
Major Source - Australia

Pearl, Tahitian Cultured
Usual Treatments - Color Stabilization
Hardness - 2.5 to 4
Major Source - Tahiti

Pearl, Akoya Cultured
Usual Treatments - Color Stabilization
Hardness - 2.5 to 4
Major Source - Japan

Pearl, Mahe
Usual Treatments - Color Stabilization
Hardness - 2.5 to 4
Major Sources - China, Japan

Pearl, Freshwater
Usual Treatments - Color Stabilization
Hardness - 2.5 to 4
Major Sources - China, Japan

Peridot
Usual Treatments - None
Hardness - 6.5 to 7
Major Sources - United States, China, Australia,
Brazil, Myanmar, Kenya, Mexico, Sri Lanka

Smoky Quartz
Usual Treatments - Heat, Impregnation
Hardness - 7
Major Sources - Brazil, Madagascar, Uruguay, Sri
Lanka, South Africa

Tourmaline, Green
Usual Treatments - Heat
Hardness - 7 to 7.5
Major Sources - United States, Brazil, Afghanistan, India, Kenya, Madagascar, Myanmar, Pakistan, Mozambique

Sapphire, Yellow
Usual Treatments - Heat Diffusion
Hardness - 9
Major Sources - Australia, Thailand, Sri Lanka,
United States, India, Tanzania, Kamduchea, Myanmar, Madagascar

Zircon, Blue
Usual Treatments - Heat
Hardness - 7.5
Major Sources - Kampuchea, Sri Lanka, Myanmar,
Australia, Thailand, China

Diamond, White
Usual Treatments - None
Hardness - 10
Major Sources - Canada, Russia

Diamond, Colored
Both natural and treated colors are available
Hardness - 10
Major Sources - Canada, Russia, Australia

Citrine
Usual Treatments - Heat
Hardness 7
Major Sources - Brazil, Bolivia

Emerald
Usual Treatments - Oiling, Resin Infusion
Hardness - 7.5 to 8
Major Sources - Afghanistan, Columbia, Zambia, Brazil, Zimbabwe

Jade, Jadeite
Usual Treatments - Dyed (ours is untreated)
Hardness - 7
Major Sources - Burma, China

Topaz, Diffused
Usual Treatments - Diffusion
Hardness - 8
Major Sources - Brazil, Nigeria, Australia,
Myanmar, Mexico, Namibia, Pakistan, Sri Lanka