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GEM IDENTIFICATION REPORT (BLACK EDITION)

GENERAL INFORMATION
  • Date of Issued13 November 2024
  • ObjectOne faceted gemstone
  • Image is Approximate
  • Report Number8540434186
  • SpeciesNatural Corundum
  • VarietyNatural Sapphire
  • Weight16.40 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
  • Measurements14.79 x 12.01 x 9.52 mm
  • ShapeRectangular Cushion
  • Cutting StyleModified Mixed
  • TransparencyTransparent
  • Colorvioletish Blue

    The hue's characteristics of this gem earns the color "Cornflower Blue"
  • ToneMedium
  • SaturationMedium
  • Refractive Index1.762 - 1.770
  • Specific Gravity4.00 ±
  • MagnificationUraninite crystals, Fingerprints, Needles
  • 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 described in this report possesses the color "cornflower blue" treasured by many gemstone collectors. Its alluring color is characterised by the harmony between the component and dominant hue. Apart from its color, this stone has great lustre and is fashioned in a very good cutting that can delivers amazing brilliance. “No indications of heating" indicating the beauty of the stone is natural. With its exceptional quality traits, 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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