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Non treated coral and impregnated coral

2024

Instituto Gemológico Español (IGE)

Instituto Gemológico Español (IGE)
Madrid, Spain

A polymer or wax is applied in the surface of porous gems such as jade, opal, coral or turquoise to improve its appearance and to give a greater durability.

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  • Title: Non treated coral and impregnated coral
  • Date: 2024
  • Location: Madrid, Spain
  • Type: Photograph
  • Medium: Natural gemstone
  • Photograph: Irene Gobet | Instituto Gemológico Español
Instituto Gemológico Español (IGE)

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