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Gemstone Identification & Classification

Definitive scientific determination of mineral species, variety, origin characteristics, and synthetic/natural classification.

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Service Purpose

Definitive Species & Variety Identification

Gemstone identification establishes the exact mineralogical identity of a gem specimen. For instance, distinguishing whether a red gem is Natural Ruby (Corundum), Red Spinel, Almandine Garnet, or Synthetic Flame-Fusion Corundum requires precise scientific measurement.

IGL identification reports provide conclusive diagnostic results based on crystal structure, refractive index, optic figure, micro-inclusions, and spectroscopic signatures.

Identification Categories

Mineral Species e.g., Corundum, Beryl, Chrysoberyl, Garnet, Quartz.

Gemological Variety e.g., Ruby, Sapphire, Emerald, Aquamarine, Alexandrite.

Origin Classification Natural mineral vs. Synthetic lab-grown or imitation.

DIAGNOSTIC CRITERIA

Methodology & Diagnostic Indicators

Key analytical methods used to verify gemstone identity.

1. OPTICAL TESTS

Refractometry & Polariscopy

Measures single vs double refraction, optic sign (+/-), and exact refractive index limits to isolate the mineral family.

2. INCLUSION STUDY

Growth Features & Inclusions

Microscopic observation of natural inclusions (silk, fluid veining, crystal inclusions) vs synthetic curved striae or flux remnants.

3. SPECTROSCOPY

Absorption Spectrum

Identifies characteristic diagnostic absorption bands caused by chromium, iron, vanadium, or titanium trace elements.

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