The Karowe mine has produced a 998-carat diamond, the latest in a string of large rough stones from the lucrative deposit in Botswana. Lucara Diamond Corp., which owns Karowe, will work with manufacturing partner HB Antwerp to assess how to maximize value from the rough, the miner said Wednesday. The unbroken, high-white, clivage stone — […]
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WHERE CAN I SELL MY JEWELRY? Hello, I am Mark Watson. I have been buying and appraising estate jewelry, gems and watches for over 45 years in Great Britain and San Francisco. I love finding treasures: a favorite story from my early years is when a sweet lady walked in with a big box full
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The scintillating European style diamond cut does not originate in Europe, however it all began with a group of European diamond cutters in Boston around the turn of the 1900’s lead by by Henry Morse, an artist and diamantaire who battled his employees for beauty over preservation of carat weight in the 1860s. It was
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Up to 99 % of all Sapphires are heat treated; Sapphires have been treated for centuries by heat to enhance their color and clarity. The early forms of heat treatment were rudimentary and highly risky involving heat and blow pipes the results were unpredictable and often shattering. Today we have computer controlled ovens that heat
Whats The Big Deal With Natural Unheated sapphires ? Read More »