| Gemstone Chart |
 Natural Lapis
Lazurite is a popular but generally expensive mineral. Well-formed, deep blue crystals are rare and valuable. Lapis lazuli is a gemstone of the kind that might have come straight out of the Arabian Nights: a deep blue with golden inclusions of pyrites which shimmer like little stars.
Color: Blue, greenish-blue, violet blue
Categories: semi-precious stone
Chemical Composition: A complex aggregate
Crystal Group: Not applicable
Refractive Index: 1.5
Hardness: 5.5
Density: 2.7-2.9
Occurrence: Afganistan, Pakistan, Chile, Russia, U.S.A., Angola, Burma
|  Natural Mawsitsit
Mawsitsit is a rare, intense green variety of jadeite found in Burma.Mawsitsit is named for its source location, the small village of Mawsitsit.It is found in only one deposit on earth..
Color: Green with black spots
Categories: semi-precious stone
Crystal Group: Not applicable
Refractive Index: 1.52
Hardness: varies, up to 7
Density: 2.5-3.2
Occurrence: Mawsitsit, Burma
|  Natural Moonstone
The most common moonstone is of the mineral adularia.It is an opaque stone, a simi-clear white, kind of the color of watered down milk.Moonstone Jewellery uses the gemstone moonstone as its main stone.
Color: white, blueish white.
Categories: semi-precious stone
Chemical Composition: KalSI3O8
Crystal Group: Monoclinic
Refractive Index: 1.518 ¨C 1.526
Hardness: 6 ¨C 6.50
Density: 2.55 ¨C 2.57
Occurrence: Sri Lanka, India, Madagascar, Burma, Tanzania, U.S.A.
|  Natural Peridot
Peridot is the best known gem variety of olivine, a species name for a series of magnesium-iron rich silicate minerals.It is one of the prettiest of all green gems.Most peridot formed deep inside the earth and was brought to the surface by volcanoes. Some has also come to Earth in meteorites, but this extraterrestrial peridot is extremely rare, and you're not likely to see it in a retail jewelry store.
Color: Green, olive.
Categories: semi-precious stone
Chemical Composition: (Mg,Fe)2(SiO)4
Crystal Group: Orthorhombic
Refractive Index: 1.654-1.689
Hardness: 6.5
Density: 3.34
Occurrence: China, Burma, East Africa, U.S.A., and Vietnam
|  Natural Scapolite
Scapolite is actually the name of a series between the sodium chloride rich mineral called marialite and the calcium carbonate rich mineral meionite.Scapolite was originally discovered in 1913 in the Mogok Stone Tract in upper Burma (Myanmar). Scapolite is a rare and little known gemstone. It is a beautiful gem that comes in many colors.
Color: white, yellow, violet,pink
Categories: semi-precious stone
Chemical Composition: Na4Al3Si9O24Cl /CA4Al6Si6O24CO3
Crystal Group: Tetragonal
Refractive Index: 1.54 - 1.577
Hardness: 6
Density: 2.6-2.71
Occurrence: Kenya, Mozambique, Madagascar, Burma, Brazil, Canada.
|  Natural Sillimanite
Sillimanite is an alumino-silicate mineral with the chemical formula Al2SiO5. Sillimanite is a very rare trimorph and it has a common variety called fibrolite.
Color: violet blue, grey green, colorless, brown, green,
Categories: semi-precious stone
Chemical Composition: Al2OSiO4
Crystal Group: Orthorhombic
Refractive Index: 1.658 - 1.678
Hardness: 6 - 7.5
Density: 3.25
Occurrence: France, Madagascar, U.S.A., Sri Lanka, Burma. Kenya
|  Natural Spessartite
The Spessartite is one of the most popular of all garnets. It is highly desired by collectors, jewelry designers and gem lovers.The sources for gem quality spessartine are Sri Lanka and Brazil.
Color: Orange, yellow, brown
Categories: semi-precious stone
Chemical Composition: Mn3Al2(SiO4)3
Crystal Group: Cubic
Refractive Index: 1.79-1.81
Hardness: 7.25
Density: 4.14-4.20
Occurrence: Germany, Ceylon, Burma, Nigeria, Maevatanana-Madagascar, Isoanala-Madagascar, East Africa.
|  Natural Spinel
Spinel is the magnesium aluminium member of the larger spinel group of minerals. It has the formula MgAl2O4.Pure spinel is white, but impurities give it a wide range of colors.Almost all colors are used in jewelry, but the most valuable and popular color is the deep red. Spinel is cut into gems for use as jewelry. The deep-red variety, known as ruby spinel, is the most prized form.
Color: orange, pink, black, blue, lavender, mauve, greenish blue, and vivid red
Categories: semi-precious stone
Chemical Composition: MgAl2O4
Crystal Group: Cubic
Refractive Index: 1.718 (-.006,+.044)
Hardness: 8
Density: 3.60 (-.03, +.30)
Occurrence: Mogok, Burma; Sri Lanka; Amboseli district, Kenya; Jemaa district, Nigeria; Matombo, Umba, and Tunduru Tanzania; Hunza, Pakistan; Pamir range, Tajikstan; Luc Yen, Vietnam; Madagascar; Australia; Sweden; Brazil.
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