Gemstone Chart |
Natural Andradite Andradite is a Garnet, belonging to the Garnet group. It has the most powerful luster of any garnet, and this makes it a reputable gem. Color: brown, greenish brown, yellowish green, green Categories: semi-precious stone Chemical Composition: Ca3Fe2(SiO4)3 Crystal Group: Cubic Refractive Index: 3.82 – 3.85 Hardness: 6.5 Density: 1.888 – 1.889 Occurrence: Mexico, Korea, Namibia, Russia, Iran, South Africa
| Natural Color Change Garnet Color Change Garnet is one of the most rare, interesting, and phenomenal of all gems.Color Change Garnet gem stone rough from Madagascar Gems is fine quality. Color: Color changing from green or lavender to red. Categories: semi-precious stone Crystal Group: Cubic Refractive Index: Nesosilicate Hardness: 7-7.5 Density: 3.8 Occurrence: East Africa, Madagascar, Sri Lanka
| Natural Demantoid The demantoid is one of the most brilliant gemstones that exist, yet until recently it was little known except among collectors and gemstone lovers. Color: Green, yellow green. Categories: semi-precious stone Chemical Composition: Ca3Fe2(SiO4)3 Crystal Group: Cubic Refractive Index: 1.888 - 1.889 Hardness: 6.5 Density: 3.82 - 3.50 Occurrence: Russia, Namibia, Iran, South Africa
| Natural Fluorite Fluorite has a wide range of colors including yellow, blue, pink purple and green. It is an interesting and beautiful gemstone. Color: Colorless, yellow, brown, green, blue, violet, pink Categories: semi-precious stone Chemical Composition: CaF2 Crystal Group: Cubic Refractive Index: 1.43 Hardness: 4 Density: 3.18 Occurrence: Namibia, U.K., Switzerland, Nigeria, Czechoslovakia, Canada, Poland, Italy, Norway, Germany, U.S.A.
| Natural Grossularite A member of the garnet group, grossularite is found in a variety of colors including, yellow, brown, white, colorless, green, violet-red, and orangey red. Color: Brown, yellow, green Categories: semi-precious stone Chemical Composition: Ca3Al2(SiO4)3 Crystal Group: Cubic Refractive Index: 1.72-1.748 Hardness: 7.25 Density: 3.65 Occurrence: Canada, East Africa, Pakistan, New Zealand, Ceylon, South Africa, U.S.A.
| Natural Hessonite Hessonite is one of the gem varieties of the garnet mineral, grossular. Hessonite is usually cinnamon brown and has been called "cinnamon stone". Hessonite can also be orange; this color is becoming common on the gem markets. Color: Brownish-orange, brownish yellow, aurora red Categories: semi-precious stone Chemical Composition: Ca3Al2(SIO4)3 Crystal Group: Cubic Refractive Index: 1.72-1.74 Hardness: 7.25 Density: 3.65 Occurrence: Sri Lanka, Mexico, Brazil, Canada, Madagascar
| Natural Malaia Garnet Malaia garnet is a mixture of almandine, pyrope, and spessartine. It has remained the preserve of collectors for the 2 decades since it was discovered, mainly due to its extreme rarity.Tanzania is the known source for this lovely gemstone. Color: orangey pink, champagne, orange brown, copper-pink. Categories: semi-precious stone Chemical Composition: [Mg3 + Mn3]AL2(SIO4) Crystal Group: Cubic Refractive Index: 1.73 - 1.81 Hardness: 7 - 7.5 Density: 3.65 - 4.20 Occurrence: Kenya, Tanzania, Madagascar
| Natural Mali Garnet Mali Garnet is a mixture of grossular (calcium aluminum silicate) and andradite (calcium iron silicate ). It is a yellow-green variety of grossular with a slight overlap in the grossular-andradite series.Mali garnet is one of the latest discoveries in the garnet family. Color: yellow, brown, green. Categories: semi-precious stone Chemical Composition: Ca3Al2(SiO4)3 Crystal Group: Cubic Refractive Index: 1.72-1.748 Hardness: 7.25 Density: 3.65 Occurrence: Mali
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