There are some exceptions to this general rule and even here, only certain qualities of stones from the list below will command a premium price. Most of these locations produce a wide range of quality and most would be considered typical commercial (mediocre) quality.
Customers interested in these gemstones MUST have an independent laboratory report verifying geographic origin. Today, such reports may come from the Gemological Institute of America in Carlsbad, California, the American Gem Laboratory in New York or the Gubelin Laboratory in Switzerland.
Learn more about Colored Gemstones:
Jun 25, 2017 | TOM TIVOL
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May 3, 2017 | TOM TIVOL