Diamonds

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POL – BELLATAIRE

In late 1999, the Lazar Kaplan company announced a new process for "decolorizing" diamonds, meaning that brown diamonds become colorless. The company claimed the process was undetectable and permanent, and...

Opal and the phenomenon of opalization

Opal is one of the most intriguing and enchanting gemstones the earth has to offer. With its unique play of color and mysterious appearance, it has fascinated jewelers, collectors, and...