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GEM IDENTIFICATION REPORT (BLACK EDITION)

GENERAL INFORMATION
  • Date of Issued11 March 2024
  • ObjectOne faceted gemstone
  • Image is Approximate
  • Report Number9408927469
  • SpeciesNatural Corundum
  • VarietyNatural Sapphire
  • Weight20.09 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
  • Measurements14.61 x 15.09 x 10.85 mm
  • ShapePear
  • Cutting StyleModified Mixed
  • TransparencyTransparent
  • ColorIntense Blue

    The hue's characteristics of this gem earns the color "Royal Blue"
  • ToneLight - Medium
  • SaturationIntense
  • Refractive Index1.762 - 1.770
  • Specific Gravity4.00 ±
  • MagnificationHeat-altered fingerprints, Melted crystals
  • EnhancementIndications 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 20.09 carats natural sapphire described in this report earns the color "Royal Blue", which highly esteemed by gemstone collectors. Its highly saturated blue is complemented with the ideal range of tone, which helps to better showcase the gemstone's color. Apart from its attractive color, the gemstone has great lustre. Based on these factors, it 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.
Disclosure Notes, Limitations & Disclaimer
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