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GEM IDENTIFICATION REPORT (BLACK EDITION)

GENERAL INFORMATION
  • Date of Issued13 November 2024
  • ObjectOne faceted gemstone
  • Image is Approximate
  • Report Number1412220842
  • SpeciesNatural Corundum
  • VarietyNatural Sapphire
  • Weight18.65 Carats
  • EnhancementNo Indications 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
  • Measurements15.47 x 13.89 x 10.40 mm
  • ShapeOval
  • Cutting StyleModified Mixed
  • TransparencyTransparent
  • ColorBlue
  • ToneMedium
  • SaturationMedium
  • Refractive Index1.762 - 1.770
  • Specific Gravity4.00 ±
  • MagnificationFlat crystals, Growth zoning
  • EnhancementNo Indications of Heating
  • CommentsAny statements on origin is an expert opinion based on a collection of observations and analytical data.

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
  • The natural sapphire of 18.65 carats, untreated, is a true rarity; only a small number of sapphires in the trade possess such exceptional qualities. It displays a charming blue color with excellent luster, providing a notable amount of brilliance. Based on these factors, this natural sapphire deserves our special mention and appreciation.
  • 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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