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TAVIRA
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Gemstones
Precious
Semi-Precious
Rare & Collector
Organic
All Gemstones
Decorative Stones
Marble
Granite
Onyx
Quartzite
Limestone & Travertine
Semi-Precious Slabs
All Decorative Stones
Crystals & Minerals
Carving & Ornamental
Crystals & Specimens
Unique & Unusual
All Crystals & Minerals
Learn
Compare
Journal
Birthstones
A–Z Index
Home
Colors
Black
Black Stones
Gemstones and decorative stones found in black, from famous precious stones to rare collector finds.
Red
Pink
Orange
Yellow
Green
Blue
Purple
Brown
Black
White & Colorless
Multicolor
Color-Change
Semi-Precious
Opal
Opal (hydrated silica) · Hardness 5.5–6.5
Uncommon
Organic
Pearl
Aragonite and conchiolin (nacre) · Hardness 2.5–4.5
Uncommon