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GEM IDENTIFICATION REPORT (BLACK EDITION)

GENERAL INFORMATION
  • Date of Issued20 March 2024
  • ObjectOne faceted gemstone
  • Image is Approximate
  • Report Number5143840489
  • SpeciesNatural Corundum
  • VarietyNatural Sapphire
  • Weight12.69 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
  • Measurements16.21 x 12.03 x 7.54 mm
  • ShapeOval
  • Cutting StyleModified Mixed
  • TransparencyTransparent
  • ColorIntense Blue

    The hue's characteristics of this gem earns the color "Royal Blue"
  • ToneMedium - Medium Dark
  • SaturationStrong - Intense
  • Refractive Index1.762 - 1.770
  • Specific Gravity4.00 ±
  • MagnificationStrings of minute particles, Heat-altered fingerprints
  • 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
  • One of the most important criteria for a gemstone's quality is its color. The 12.69 carats natural sapphire described in this report possesses an exquisite color. It is characterized by strong to intense saturation and an ideal range of tone, earning it the color term "Royal Blue."
  • 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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