Difference between revisions of "Chrysoprase"
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== Description == | == Description == | ||
| − | A translucent, apple-green stone composed of microcrystalline [ | + | A translucent, apple-green stone composed of microcrystalline [[quartz]]. Chrysoprase is a variety of [[chalcedony]] that contains small amounts of hydrated nickel silicate. The gemstone has occasionally been found in Egyptian, Greek, and Roman jewelry. Chrysoprase was also valued for mural decorations. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 08:58, 13 January 2014
Description
A translucent, apple-green stone composed of microcrystalline Quartz. Chrysoprase is a variety of Chalcedony that contains small amounts of hydrated nickel silicate. The gemstone has occasionally been found in Egyptian, Greek, and Roman jewelry. Chrysoprase was also valued for mural decorations.
Synonyms and Related Terms
chalcedony; crisoprásio (Port.); Chrysopras (Deut.)
Other Properties
Fracture = conchoidal. Luster = vitreous to waxy. Streak = white.
| Mohs Hardness | 7.0 |
|---|---|
| Density | 2.6 |
Additional Information
Mineralogy Database: Quartz
Comparisons
Properties of Common Gemstones
Authority
- Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
- A.Lucas, J.R.Harris, Ancient Egyptian Materials and Industries, Edward Arnold Publishers Ltd., London, 4th edition, 1962
- C.W.Chesterman, K.E.Lowe, Audubon Society Field Guide to North American Rocks and Minerals, Alfred A. Knopf, New York, 1979
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 647