Gemdrop® VERIFIED GEM RECORD

This gem has been independently assessed and recorded within the official Gemdrop® Verification Database.

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Gemdrop® Identification Code

CR-4Y2ZT-4CT-10X8-C3Q1

Verification Record

Origin
Lab-Grown
Date Added
2026-04-19

Gem Details

Mineral
Corundum
Gem Type
Ruby
Shape
Emerald
Cut Style
Step
Dimensions (mm)
10x8
Carat Weight
4 ct

Appearance and Grading

Colour
Red
Colour Grade
Vivid Red - Pigeon Blood Red Type
Clarity
Eye-clean
Polish
Excellent
Symmetry
Excellent

Scientific Assessment

Refractive Index
1.762–1.770
Specific Gravity
3.97–4.05
Fluorescence
Very Strong
Test Methods
Visual, SG, RI, Fluoro

Additional Identification

Inscription
None

Gem Description

A 4.00 ct lab-grown ruby in an emerald shape with a step cut, displaying a red colour. This gemstone has been independently assessed and permanently recorded under Gemdrop® ID CR-4Y2ZT-4CT-10X8-C3Q1.

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Explore the science, properties and laboratory-growth information for Ruby at Gemdrop®.

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Gemdrop® Verification Authority

This verification record forms part of the permanent Gemdrop® Verification Database.

Gemdrop® Ltd
167–169 Great Portland Street
5th Floor
London
W1W 5PF
United Kingdom

Verified by:
Dr A. Barnard, PhD (Geology), GEMDROP