Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.
Read MoreGIA, September 29, 2014
Once upon a time, gem cutting was a strict craft bound by centuries of tradition. Then Bernd Munsteiner (b. 1943) invented the fantasy cut.
Read MoreGIA, September 29, 2014
Sometimes what you don’t see is as important as what you do. “Negative space” is the explanation for this curious statement.
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