|Color||Can be numerous colors, including blue, grey, white, pink, peach, green and brown, as well as colorless|
|"Fracture||uneven to conchoidal|
|"Mohs scale hardness||6.0|
Moonstone has been used in jewelry for millennia, including ancient civilizations. The Romans admired moonstone, as they believed it was born from solidified rays of the Moon. Both the Romans and Greeks associated moonstone with their lunar deities. In more recent history, moonstone became popular during the "Art Nouveau period; French goldsmith "René Lalique and many others created a large quantity of jewelry using this stone.
The most common moonstone is of the "mineral "adularia, named for an early mining site near Mt. Adular in "Switzerland, now the town of St. Gotthard. The "plagioclase "feldspar "oligoclase also produces moonstone "specimens. Moonstone is feldspar with a pearly and opalescent "schiller. An alternative name is hecatolite.
Moonstone is composed of two feldspar species, "orthoclase and "albite. The two species are intermingled. Then, as the newly formed mineral cools, the intergrowth of orthoclase and albite separates into stacked, alternating layers. When light falls between these thin, flat layers, it scatters in many directions producing the phenomenon called "adularescence.
The moonstone is the "Florida State Gemstone; it was designated as such in 1970 to commemorate the "Moon landings, which took off from "Kennedy Space Center. Despite it being the Florida State Gemstone, it does not naturally occur in the state.
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