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GEM IDENTIFICATION REPORT (BLACK EDITION)

GENERAL INFORMATION
  • Date of Issued23 November 2024
  • ObjectFifteen faceted gemstones
  • Image is Approximate
  • Report Number4512849012
  • SpeciesNatural Corundum
  • VarietyNatural Sapphire
  • WeightTotal 104.18 Carats
  • EnhancementIndications of Heating

ORIGIN INFORMATION
  • Gemological testing revealed characteristics consistent with those of Natural Sapphire from:
  • CountrySri Lanka
  • Sri Lanka mines produce sapphire since ancient times, it has been well established by 1292, when Marco Polo first landed the Gem Island. To this day, it is still one of the most prominent sapphire producers in the world. The famous sapphire at the heart of Princess Diana's engagement ring is from Sri Lanka too.

ADDITIONAL INFORMATION
  • Measurements*see item description
  • ShapeSquare and Rectangular Cushion
  • Cutting StyleMixed
  • TransparencyTransparent
  • ColorStrong Blue
  • ToneMedium - Medium Dark
  • SaturationMedium - Strong
  • Refractive Index1.762 - 1.770
  • Specific Gravity4.00 ±
  • MagnificationMelted crystals, Heat-altered fingerprints
  • EnhancementIndications of Heating
  • CommentsAny statements on origin is an expert opinion based on a collection of observations and analytical data.
  • Item Description

IMPORTANT INFORMATION
  • Tested withUV-Vis-NIR Spectrometer
  • The UV-Vis-NIR spectrum of this sapphire shows iron-related absorption at 388nm and 450nm. And the absence of broad band at 880nm helps to distinguish the environment this sapphire was formed in.
  • Special Mention
  • This report features fifteen beautiful natural sapphires with gentle yet eye-catching colors, characterized by a strong blue hue. Beyond their captivating color, these sapphires boast great luster and good cutting, complementing one another to showcase their amazing brilliance.
  • Examined by Global Gemological Laboratory team of experienced gemologists (GG from GIA, AG from AIGS)
Tested and examined by GlobalGem Group of qualified Gemologists comprising members from GIA (GG) of America, Gem-A (FGA) of United Kingdom and AIGS(AG) of Asia.
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