Blog

• 10th Aug 2016

  Surface coating of gemstones explained

  Gemstone Coating aka Surface Coating or Surface ModificationCoating (aka surface coating or surface modification) gemstones is a treatment technique which dates back hundreds of years. Its purpose…

  Published by Gordon Weller GIA GG

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• 18th Jul 2016

  Irradiated gemstones: Are they safe to wear?

  Gem treatments have become increasingly sophisticated over time. In the early 1900’s, experiments were conducted with electromagnetic radiation and bombardment of gemstones with subatomic particles…

  Published by Gordon Weller GIA GG

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