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Aquamarine: the Fortunate Gem - Yavorskyy
Jun 05, 2018
From the Bible’s Revelations to the last month’s royal wedding sensation, Aquamarine has been the luckiest gemstone over centuries....
Gems & Gemology 1995. The Katherina Red Spinel 123 cts - Yavorskyy
May 19, 2018
(Extract from Gems & Gemology magazine, fall 1995, XXXI volume) "Large spinel from Tajikistan. Spinel...