| Gemstone Chart |
 Natural Beryl
Beryl is a semi-precious clear gemstone which usually comes in greens, yellows, and occasionally pinks, ands various shades thereof.
Color: Green, blue, pink, yellow, red
Categories: semi-precious stone
Chemical Composition: Be3Al2(SiO3)6
Crystal Group: Hexagonal
Refractive Index: 1.577(+-.016), 1.583 (+-.017)
Hardness: 7.5
Density: 2.67-2.745
Occurrence: Austria, Columbia, Brazil, Russia, East Africa, Australia, Madagascar, South Africa, Zimbabwe, India, Pakistan, Zambia, Nigeria, U.S.A., Afghanistan
|  Natural Bi Color Tourmaline
Bi color tourmaline is the name given to tourmaline which displays more than one color in the same cystal.It is classified as a semi-precious stone.
Color: Green, red, yellow, orange. Brown, green, pink
Categories: semi-precious stone
Chemical Composition: (NaCa)(LI,MgFe,Al)9B3Si6(O,OH)31
Crystal Group: Hexagonal
Refractive Index: 1.624(+.005, -.005) - 1.644(+.006, -.006)
Hardness: 7-7.5
Density: 3.06 (.05, +.15)
Occurrence: East Africa, Brazil, USA, Afghanistan, Nigeria, Madagascar
|  Natural Bixbite
Bixbite is a specific kind of emerald stone known as beryl which is also known as red beryl, red emerald or scarlet emerald.
Color: Pink, Red
Categories: semi-precious stone
Chemical Composition: Be3Al2(SiO3)6
Crystal Group: Hexagonal
Refractive Index: 1.577(+-.016), 1.583 (+-.017)
Hardness: 7.5
Density: 2.67-2.745
Occurrence: Utah, U.S.A.
|  Natural Calcite
Calcite is a common mineral which occurs in transparent to semitranslucent forms in a wide variety of colors. Calcite is too soft to be of use in jewelry but, it is sometimes used in carvings or ornamental objects.
Color: white, yellow, pink
Categories: semi-precious stone
Chemical Composition: CaCO3
Crystal Group: Triclinic
Refractive Index: 1.486 - 1.658
Hardness: 3
Density: 2.7
Occurrence: Calcite is found all over the world.
|  Natural Danburite
Danburite is a very spiritual stone that carries a pure vibration. With a hardness of 7, danburite is quite hard and suitable for any kind of jewelry. Danburite handles easily and ordinarily offers no problems for lapidaries. It makes an especially brilliant gem because of its extreme clarity.
Color: White, yellowish, very light pink, buff colored, very light brown
Categories: semi-precious stone
Chemical Composition: calcium borosilicate
Crystal Group: Orthorhombic
Refractive Index: 1.630(+.003,-.003) - 1.636 (+.003, -.003)
Hardness: 7
Density: 3
Occurrence: Danbury, Connecticut and Russell, New York, USA; Charcas, San Luis Potosi, Mexico; Kyushu Island, Japan; Mogok, Burma and Uri, Switzerland; Madagascar.
|  Natural Diamond
Diamond is the ultimate gemstone, having few weaknesses and many strengths. It is well known that Diamond is the hardest substance found in nature.
Color: White, yellow, brown, black. Rarely, blue, red, or pink.
Categories: precious stone
Chemical Composition: C
Crystal Group: Cubic
Refractive Index: 2.417
Hardness: 10
Density: 3.52
Occurrence: Africa, Russia, Canada, Australia, India
|  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 Freshwater Pearl
Freshwater pearls are a kind of pearl that comes from freshwater mussels.Freshwater pearls come in many shapes from round to button shapes, from flat flakes to rice shapes and in many colors. As with the salt water Akoya pearl the round shapes are generally more expensive.
Color: orange, pink, white, gray, light purple, rose, black, brown, gold, yellow, silvery, green, blue, bronze.
Categories: semi-precious stone
Chemical Composition: CaCO3
Crystal Group: Not applicable
Hardness: 3.5 - 4.0
Density: 2.66 ¨C 2.78+
Occurrence: China, Japan
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