Difference between revisions of "Sard"
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== Description == | == Description == | ||
A translucent orange to reddish-brown form of [[chalcedony|chalcedony]]. Sard is darker than [[carnelian|carnelian]], but otherwise a similar stone. Both have been mined or gathered since at least 3000 BCE. Water-worn pebbles of sard are found in Egypt, India, and several areas of Europe. It was popular for amulets and scarabs. | A translucent orange to reddish-brown form of [[chalcedony|chalcedony]]. Sard is darker than [[carnelian|carnelian]], but otherwise a similar stone. Both have been mined or gathered since at least 3000 BCE. Water-worn pebbles of sard are found in Egypt, India, and several areas of Europe. It was popular for amulets and scarabs. | ||
| − | + | [[File:13.237-C38969CR-d1.jpg|thumb|Oval gem<br>MFA# 13.237]] | |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
chalcedony; sardius; sardoine; sardine | chalcedony; sardius; sardoine; sardine | ||
| − | + | == Physical and Chemical Properties == | |
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Fracture = conchoidal. Luster = vitreous to waxy. Streak = white | Fracture = conchoidal. Luster = vitreous to waxy. Streak = white | ||
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| 2.6 | | 2.6 | ||
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== Comparisons == | == Comparisons == | ||
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[[media:download_file_467.pdf|Properties of Common Gemstones]] | [[media:download_file_467.pdf|Properties of Common Gemstones]] | ||
| + | ==Resources and Citations== | ||
| − | + | * Mineralogy Database: [http://www.webmineral.com/data/Quartz.shtml Quartz] | |
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* Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | * Jack Odgen, ''Jewellery of the Ancient World'', Rizzoli International Publications Inc., New York City, 1982 | ||
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* C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | * C.W.Chesterman, K.E.Lowe, ''Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf, New York, 1979 | ||
| − | * Wikipedia | + | * Wikipedia: http://en.wikipedia.org/wiki/Sard (Accessed Nov. 9, 2005) |
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 22 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 22 | ||
Revision as of 10:16, 28 August 2020
Description
A translucent orange to reddish-brown form of Chalcedony. Sard is darker than Carnelian, but otherwise a similar stone. Both have been mined or gathered since at least 3000 BCE. Water-worn pebbles of sard are found in Egypt, India, and several areas of Europe. It was popular for amulets and scarabs.
Synonyms and Related Terms
chalcedony; sardius; sardoine; sardine
Physical and Chemical Properties
Fracture = conchoidal. Luster = vitreous to waxy. Streak = white
| Mohs Hardness | 7.0 |
|---|---|
| Density | 2.6 |
Comparisons
Properties of Common Gemstones
Resources and Citations
- Mineralogy Database: Quartz
- 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
- Wikipedia: http://en.wikipedia.org/wiki/Sard (Accessed Nov. 9, 2005)
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 22
- Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
- The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998