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hardstone
Also known as: semiprecious stone
Learn about this topic in these articles:
jewelry
- In jewelry: The properties of gems
Among the semiprecious stones used in jewelry are amethyst, garnet, aquamarine, amber, jade, turquoise, opal, lapis lazuli, and malachite. Matrix jewelry is cut from a stone such as opal or turquoise and the surrounding natural material,
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sculpture
- In sculpture: Primary
Hardstones, or semiprecious stones, constitute a special group, which includes some of the most beautiful of all substances. The working of these stones, along with the working of more precious gemstones, is usually considered as part of the glyptic (gem carving or engraving), or lapidary,…
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