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Sec. IV, Ch. 13: Semi-Precious Stones, Euclase

Sec. IV, Ch. 12: Semi-Precious Stones, Crocidolite Page of 366 Sec. IV, Ch. 14: Semi-Precious Stone - Garnet, Carbuncle, and Cinnamon Stone Text size:minus plus Restore normal size   Mail page  Print this page
CHAPTER XIII.
EUCLASE.
HIS mineral has occasionally been cut and polished as a gem-stone, but rather as a mat­ter of scientific curiosity, than with a view to its introduction into jewellery. It is, in fact, a rare mineral, occasionally found with Topaz at Villa Rica, in Brazil. It is also known to occur with Beryl, on the River Sanarka, in the Urals.
Euclase is always found in crystals which exhibit perfect cleavage, and perhaps the most curious feature of the stone is its excessive brittleness—whence, indeed, the name " Euclase," from eu and klao. Its colour is generally a pale straw, passing in some specimens into blue and green. The mineral is trichroic, and possesses considerable lustre. In its chemical relations it stands closely related to the Emerald.
EUCLASE.
Sec. IV, Ch. 12: Semi-Precious Stones, Crocidolite Page of 366 Sec. IV, Ch. 14: Semi-Precious Stone - Garnet, Carbuncle, and Cinnamon Stone
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