Difference between revisions of "Heliodor"
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Heliodor (Deut.) | Heliodor (Deut.) | ||
| − | == | + | == Physical and Chemical Properties == |
| − | Hexagonal crystal system. Conchoidal fracture. | + | * Hexagonal crystal system. |
| − | + | * Conchoidal fracture. | |
| − | Weakly pleochoric. May contain inclusions. | + | * Weakly pleochoric. |
| + | * May contain inclusions. | ||
{| class="wikitable" | {| class="wikitable" | ||
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! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.68-2.71 | + | | 2.68-2.71 g/ml |
|- | |- | ||
! scope="row"| Refractive Index | ! scope="row"| Refractive Index | ||
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[[media:download_file_454.pdf|Properties of Common Gemstones]] | [[media:download_file_454.pdf|Properties of Common Gemstones]] | ||
| − | + | ==Resources and Citations== | |
| − | |||
| − | == | ||
* 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 | ||
Revision as of 13:05, 31 August 2022
Description
A golden yellow Beryl stone most commonly found in southwest Africa. Heliodor has been used for Roman intaglios and gemstones.
Synonyms and Related Terms
Heliodor (Deut.)
Physical and Chemical Properties
- Hexagonal crystal system.
- Conchoidal fracture.
- Weakly pleochoric.
- May contain inclusions.
| Mohs Hardness | 7.5-8.0 |
|---|---|
| Density | 2.68-2.71 g/ml |
| Refractive Index | 1.57-1.86 |
Comparisons
Properties of Common Gemstones
Resources and Citations
- Jack Odgen, Jewellery of the Ancient World, Rizzoli International Publications Inc., New York City, 1982
- Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 101