1) Beautiful stone 2) Calcium mineral 3) Cut mineral 4) Decorative stone 5) Gemstone 6) Gemstone mineral 7) Jewel mineral 8) Jewel 9) Mineral gemstone 10) Mineral jewel 11) Polished mineral 12) Polished jewel 13) Precious gemstone 14) Prized stone 15) Precious jewel 16) Precious gem 17) Precious stone
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https://www.crosswordclues.com/clue/labradorite
Labradorite ((Ca, Na)(Al, Si)4O8), a feldspar mineral, is an intermediate to calcic member of the plagioclase series. It is usually defined as having `%An` (anorthite) between 50 and 70. The specific gravity ranges from 2.68 to 2.72. The streak is white, like most silicates. The refractive index ranges from 1.559 to 1.573. Twinning is common. As.....
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http://en.wikipedia.org/wiki/Labradorite
• (n.) A kind of feldspar commonly showing a beautiful play of colors, and hence much used for ornamental purposes. The finest specimens come from Labrador. See Feldspar.
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http://thinkexist.com/dictionary/meaning/labradorite/
a feldspar mineral in the plagioclase (q.v.) series that is often valued as a gemstone and as ornamental material for its red, blue, or green ... [2 related articles]
Found on
http://www.britannica.com/eb/a-z/l/3
Lab'ra·dor`ite noun (Min.) A kind of feldspar commonly showing a beautiful play of colors, and hence much used for ornamental purposes. The finest specimens come from Labrador. See
Feldspar .
Found on
http://www.encyclo.co.uk/webster/L/2
Labradorite (Labrador feldspar) is a mineral found on the coast of Labrador, and formerly called Labrador hornblende, though that is the designation of hypersthene. It has the formulae (Na,Ca)AlSi3O8 and a relative hardness of 6. It is one of the plagioclase feldspars, also known as soda-lime feldspars. Others in the grouping are: albite, oligoclas...
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http://www.probertencyclopaedia.com/browse/HL.HTM
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