Thin-film inclusions and triangle-shaped fissures are discovered in the fibrous arms of trapiche-like sapphire samples.

A laurentthomasite rough sample from Madagascar displays an abundance of hexagonal etch features.

A detailed fluorescence analysis of pink grossular is documented for the first time.

An overview of GIA’s presentations at the annual Geological Society of America (GSA) meeting held in Denver, Colorado.

The gemological community mourns the loss of former GIA director of education and instrumental G&G contributor, Peter Keller.

Testing identifies a “red corundum” sample as red-dyed spodumene.

Three types of root amber beads submitted for identification are analyzed in Wuhan, China.

Cobalt is identified as the primary coloring agent in an intense blue specimen of gahnospinel at GIA’s Bangkok laboratory.

A large specimen of extraterrestrial peridot is analyzed at the Carlsbad laboratory.

Aegirine inclusions are observed in two samples of poudretteite from Mogok.

A synthetic quartz crystal cluster is easily mistaken as a natural specimen.

Tiny crystal and particle cloud inclusions resemble a galaxy in a 2.01 ct diamond.

Vibrant blue apatite inclusions are observed in a garnet sample from an undisclosed source in Africa.

A quartzite bangle mimics the appearance of jadeite jade.