Certificate Verification
IGLC
INTERNATIONAL GEMMOLOGICAL
LABORATORY COLOMBO
GEMMOLOGICAL DETAILED TEST REPORT
No: GR-002571
Date: 5th October 2026
Weight: 2,475 ct
Dimensions: 69 x 53 x 32 mm
GEMMOLOGICAL TEST RESULTS
Refraction: Doubly Refractive
Refractive Index: 1.762 - 1.770
Birefringence (DR): 0.008 - 0.010
Optic Character: Uniaxial Negative
Fluorescence Under UV :
Vivid Red or Orange-Red Glow Pleochroism :
Moderately to strongly dichroic, typically showing orangy-red and purplish-red shades Hardness: 9 Specific Gravity (SG): 4.00
Vivid Red or Orange-Red Glow Pleochroism :
Moderately to strongly dichroic, typically showing orangy-red and purplish-red shades Hardness: 9 Specific Gravity (SG): 4.00
Treatment Status
No Evidence of Heat Treatment
Origin of stone: Sri Lanka
Shape: Rough
Colour: Pigeon Blood Red
Transparency: Transparent
IDENTIFICATION
Species
Natural Ruby
Variety
Natural Ruby
Internal Features & Comments
Inclusions
No inclusion
K. Samitha Liyanage
Consultant Gemmologist
BSc (Honours) Logistics & Operations Management (UK),
Diploma in Gemmology (D-Gem SL),
FGA (London), MGA (Sri Lanka), CIMA (UK).
Verify online
No. GR-002571
INTERNATIONAL GEMMOLOGICAL LABORATORY COLOMBO
43/27, 9th Lane, Pepiliyana Mawatha, Nugegoda 10250
+94715249290 | +94712247240
This report is an expression of opinion of the laboratory, based on examination of the stone at the date of issue using standard gemmological methods and instruments. It is not a valuation or appraisal. Identification, treatment and origin conclusions reflect techniques available at that time. The report applies only to the stone described and may not be reproduced except in full. Gemstone is not warranted against subsequent change, damage or replacement.