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

Petalite, also known as castorite, is a lithium aluminium phyllosilicate mineral LiAlSi4O10, crystallizing in the monoclinic system. Petalite is a member of the feldspathoid group. It occurs as colourless, grey, yellow, yellow grey, to white tabular crystals and columnar masses. Occurs in lithium-bearing pegmatites with spodumene, lepidolite, and ...
Found on
http://en.wikipedia.org/wiki/Petalite

• (n.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.
Found on
http://thinkexist.com/dictionary/meaning/petalite/
Pet'al·ite noun [ Confer French
pétalite .]
(Min.) A rare mineral, occurring crystallized and in cleavable masses, usually white, or nearly so, in color. It is a silicate of aluminia and lithia.
Found on
http://www.encyclo.co.uk/webster/P/65

Petalite has the formulae LiAlSi4O10 and a relative hardness of 7. It is an ore of lithium. Associated with spodumene, lepidolite, tourmaline.
Found on
http://www.probertencyclopaedia.com/browse/HP.HTM
No exact match found.