Gem Rock Auctions has one of the largest range of Certified Gemstones online. Our goal is to have the most comprehensive and competitive priced range of certified Gemstones. Our Verified sellers can only have gemstones certified by the laboratories listed below. New laboratories can be submitted to our Gemstone Advisory Panel for inclusion to this list.
Our Gemstone Sheriff program also reviews sellers descriptions to give buyers confidence in our Gemstones. The following table outlines the testing capability of the gemology laboratories used on GemRockAuctions
* Synethic gemstone detection can be extremly difficult for Quartz (Citrine, Amethyst, Ametrine), Beryl (Aquamarine, Morganite). Advanced equipment must be used which some laboratories may not have.
** Jaedite treatments can be detected by basic equipment, however some treatments require advanced equipment which some laboratories may not have.
*** It is extremly difficult to test for treatment via irradiation. For this reason many reports do not mention irradiation as a treatment, even on commonly treated gemstones like Topaz.
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Gem Rock Auctions has one of the largest range of Certified Gemstones online. Our goal is to have the most comprehensive and competitive priced range of certified Gemstones. Our Verified sellers can only have gemstones certified by the laboratories listed below. New laboratories can be submitted to our Gemstone Advisory Panel for inclusion to this list.
Our Gemstone Sheriff program also reviews sellers descriptions to give buyers confidence in our Gemstones. The following table outlines the testing capability of the gemology laboratories used on GemRockAuctions
* Synethic gemstone detection can be extremly difficult for Quartz (Citrine, Amethyst, Ametrine), Beryl (Aquamarine, Morganite). Advanced equipment must be used which some laboratories may not have.
** Jaedite treatments can be detected by basic equipment, however some treatments require advanced equipment which some laboratories may not have.
*** It is extremly difficult to test for treatment via irradiation. For this reason many reports do not mention irradiation as a treatment, even on commonly treated gemstones like Topaz.
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