Difference between revisions of "Hardstone"
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== Description == | == Description == | ||
| − | Semiprecious minerals that are opaque, colorful and polish to a high gloss. Hardstones typically fall in the 6-7 range on the [ | + | Semiprecious minerals that are opaque, colorful and polish to a high gloss. Hardstones typically fall in the 6-7 range on the [[Mohs' hardness scale]]. They have been used since prehistoric times for personal objects. Later uses include architectural decoration, mosaics, seals, cameos, gemstones, boxes, vases, small sculptures and furniture (tables, cabinets, altars, reliquaries, etc.). Examples of hardstones includes [[agate]], [[rock crystal]], [[jasper]], [[onyx]], [[jade]], [[chalcedony]], [[lapis lazuli]], [[carnelian]], [[bloodstone]], [[turquoise]], and [[petrified wood]]. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
Revision as of 10:25, 16 January 2014
Description
Semiprecious minerals that are opaque, colorful and polish to a high gloss. Hardstones typically fall in the 6-7 range on the Mohs' hardness scale. They have been used since prehistoric times for personal objects. Later uses include architectural decoration, mosaics, seals, cameos, gemstones, boxes, vases, small sculptures and furniture (tables, cabinets, altars, reliquaries, etc.). Examples of hardstones includes Agate, Rock crystal, Jasper, Onyx, Jade, Chalcedony, Lapis lazuli, Carnelian, Bloodstone, Turquoise, and Petrified wood.
Synonyms and Related Terms
hardstones; pietre dure
Authority
- The Dictionary of Art, Grove's Dictionaries Inc., New York, 1996 Comment: "Hardstones"
- Tom Rowland, Noel Riley, A-Z Guide to Cleaning, Conserving and Repairing Antiques, Constable and Co., Ltd., London, 1981