Diamonds and precious stones, a popular account of gems .. (1874)
Dieulafait, Louis, b. 1830, Sanford, Fanchon, tr · New York, Scribner, Armstrong, and Company · leaf 134
undum to all the minerals consisting of crystal- CORUNDUM. 113 lized alumina almost pure, without regard to thecolour of these minerals. Corundum comprehends three varieties : the hya-line corundum, the laminated corundum, and thegranular corundum. The first variety comprehendsthe precious stones.…
Precious stones · Diamonds · Gems
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