GEMOLOGICAL JOURNAL

IGL Research Blog & Articles

Scientific analysis, gemstone market insights, treatment discovery, and optical testing articles.

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FEATURED RESEARCH PAPER

Diagnostic Micro-Inclusions in Unheated Burmese Rubies

An in-depth optical microscopy study evaluating rutile silk density, negative crystal clusters, and twin planes used to confirm natural thermal history in fine corundum.

Date: September 2026 • Category: Gemstone Testing

DIAMOND SCIENCE

Screening CVD & HPHT Lab-Grown Diamonds

Optical luminescence and UV-Vis spectroscopy techniques for identifying synthetic growth features.

TREATMENT DETECTION

Identifying Beryllium Diffusion in Sapphires

Immersion microscopy techniques for detecting artificial color rims and high-temperature lattice alteration.

EMERALD CARE

Evaluating Clarity Fillers in Emeralds

Differentiating natural cedarwood oiling from artificial epoxy resin fracture filling under darkfield illumination.