1) Beautiful stone 2) Cut mineral 3) Decorative stone 4) Gemstone 5) Gemstone mineral 6) Jewel 7) Jewel mineral 8) Mineral gemstone 9) Mineral jewel 10) Polished jewel 11) Polished mineral 12) Precious gemstone 13) Precious gem 14) Prized mineral 15) Precious stone 16) Prized stone 17) Precious jewel
Found on
https://www.crosswordclues.com/clue/howlite
Howlite, a calcium borosilicate hydroxide (Ca2B5SiO9(OH)5), is a borate mineral found in evaporite deposits. Howlite was discovered near Windsor, Nova Scotia in 1868 by Henry How (1828–1879), a Canadian chemist, geologist, and mineralogist. How was alerted to the unknown mineral by miners in a gypsum quarry, who found it to be a nuisance. He cal...
Found on
http://en.wikipedia.org/wiki/Howlite
No exact match found.
