Research Article Search Results

Organic-rich material is observed through an opening in a hollow natural pearl.

A 37.41 ct natural rough diamond with distinct pink and colorless zones is examined at GIA’s Botswana laboratory.

Examination of a Fancy Deep brownish orangy pink diamond reveals evidence of treatment to enhance its color.

A summary of presentations from 24 industry-leading experts at Converge.

Examination of four heart-shaped pearls reveals cavity filling and plugging to improve durability.

Examines samples of Mona Lisa turquoise to identify their chemistry and structure, revealing copper as a major elemental component of the material.

Armenite is submitted for the first time to the Carlsbad laboratory.

A pink spinel hosts a richly textured, opaque metallic inclusion.

A pink oval conch pearl displays firework-like flame patterns.

Multiple vivid blue lazurite inclusions are observed in a near-colorless scapolite.

GIA studies a selection of rough and cut garnet from a new source in northern Vietnam.

A report on the increase of artificially assembled or altered specimens circulating in Pakistan’s local gem markets.