| Gemstone Chart |
 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 Oligoclase
Oligoclase is a rock-forming mineral belonging to the plagioclase feldspars. Oligoclase is famous for its two gem varieties: Sunstone and Moonstone.
Color: green, orange, red, colorless
Categories: semi-precious stone
Chemical Composition: [Na,Ca]AlSi3O8
Crystal Group: Triclinic
Refractive Index: 1.53 - 1.54
Hardness: 6 - 6.5
Density: 2.62 - 2.65
Occurrence: Tvedestrand and Hitero on the south coast of Norway; near Lake Baikal Russia; Ontario, Canada; Tanzania; Kangayam, southern India; France; and in Maine, New Mexico, New York, North Carolina, Pennsylvania, Virginia and Oregon in the USA.
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