Research Article Search Results

A non-nacreous pearl with a netted surface resembles the exterior of a melon.

An eight-rayed star peridot with a star system made up of two different sets of inclusions is described for the first time.

A 2.50 ct natural type IIa/IaB diamond submitted to the Dubai laboratory shifts to type IIb after deep-UV excitation.

Play-of-color pattern in Ethiopian opal is reminiscent of a turtle’s shell.

Clusters of micro-inclusions form starburst-patterned clouds in a 2.50 ct Faint yellow-green round brilliant diamond.

GIA’s Tokyo laboratory examines three grossular garnets displaying six-rayed black inclusions arranged in a snowflake-like pattern.

A unique inclusion scene caused by devitrification is observed in artificial glass.

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

A diamond feather and its reflection resemble an unidentified flying object.

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

Fungal inclusions are studied in two specimens of Burmese amber.

Showcases the diverse natural shapes of rough diamonds and explores how geological processes create their unique forms.