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GIA Museum display on liddicoatite tourmaline at the 2018 Tucson Gem and Mineral Show.
Zoning In on Liddicoatite Exhibit

An exhibit at the Tucson Gem and Mineral Show dedicated to former GIA president Richard T. Liddicoat (1918–2002).

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Cross jewel of gold, turquoise, other gems
GIA Museum Exhibits in New York

A brief look at GIA's permanent museum exhibit at the New York lab and campus.

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Dyed-bone cabochon
Dyed Bone as a Red Coral Imitation

A specimen presenting as red coral is revealed to be dyed bone.

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Jewel of purple and green jade
Jewelry Shanghai 2014

An insider look at the May 2014 show, held at the Shanghai Word Expo Exhibition & Convention Center.

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Large moissanite crystal
Record-Size Natural Moissanite Crystals Discovered in Israel

Natural moissanite crystals found in Israel has broken world records, with evidence of larger crystals in the area.

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Jadeite bangle revealing natural inclusions
Jadeite Bangle with the Appearance of Polymer Treatment

A jadeite jade bangle is submitted for lab testing to investigate the possibility of treatment.

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Synthetic ruby in matrix
Assemblage of Synthetic Ruby in Calcite Matrix

Material set in a calcite matrix and represented as natural ruby is proven to be synthetic.

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Two shattuckite specimens
Shattuckite from the DRC

Rare shattuckite from the Democratic Republic of Congo, as seen at the Tucson Gem and Mineral Show.

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Sapphire with color shift
Unusual Optical Effect in Blue Sapphire

A bluish violet sapphire shows surprising effects under lab examination.

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