NATURAL SAPPHIRE STAR BURMA non-HEATED 7.959 carats - 2 CERTIFICATES of expertise

Saphir naturel de Birmanie non chauffé 7.959 carats 2

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NON-HEATED natural star SAPPHIRE of 7.959 carats.
Sold with two certificates

EMIL - Japan (92933-3): Oval Cabochon Dark Blue Unheated Burma Star Sapphire
GCI - 1802CDS2934: Natural Star Sapphire Blue 7.96 Carats "No indication of treatment"

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Treated : Treated refers to a heating of a gemstone in order to homogenize and reinforce its color, but also to reduce inclusions. A non treated stone means a stone which has not been heated.
Sapphire : Sapphire is a gemstone of the family of the mineral corundum. The most famous color for Sapphire is blue, but trace amounts of other elements can give yellow, purple, orange, or greenish sapphires. In the case of chromium impurities in corundum it would be called a called a Ruby. Sapphires are found in Sri Lanka, Myanmar or Australia.
Cabochon cut : Means a polished dome shaped gemstone stone, without facet.