
1) Beautiful stone 2) Cut mineral 3) Decorative stone 4) Gemstone mineral 5) Gemstone 6) Jewel 7) Jewel mineral 8) Mineral jewel 9) Mineral gemstone 10) Polished jewel 11) Polished mineral 12) Precious gemstone 13) Prized stone 14) Prized mineral 15) Precious gem 16) Precious jewel 17) Precious stone
Found on
https://www.crosswordclues.com/clue/antigorite

mineral, a polymorph of serpentine (q.v.).[2 related articles]
Found on
http://www.britannica.com/eb/a-z/a/83

Antigorite is an iron-bearing secondary mineral found in serpentine. Antigorite is a hydrous silicate of magnesium and iron and belongs to the kaolinte-serpentine group of minerals. It has a green or yellowish-green colour and has a resilient structure making it suitable for carving and polishing, often being sold as a cheap artificial jade.
Found on
http://www.probertencyclopaedia.com/browse/HA.HTM

a variety of serpentine occurring in a brownish-green lamellar form.
Found on
https://www.infoplease.com/dictionary/antigorite
No exact match found.