Composite Coral Veneer Glued to Artificial Matrix
Items presented as red coral are revealed by testing to be composite coral veneers over an artificial matrix.
Jadeite Bangle with the Appearance of Polymer Treatment
A jadeite jade bangle is submitted for lab testing to investigate the possibility of treatment.
Record-Size Natural Moissanite Crystals Discovered in Israel
Natural moissanite crystals found in Israel have broken world records, with evidence of larger crystals in the area.
Unusual Optical Effect in Blue Sapphire | Gems & Gemology
A bluish violet sapphire shows surprising effects under lab examination.
Bumble Bee “Jasper” from Indonesia
Bumble Bee jasper, first discovered on Java, exhibited at the Tucson Gem and Mineral Show.
Prasiolite with Inclusion Influenced by Brazil-Law Twinning
A prasiolite specimen displaying Brazil-law twinning, usually seen in the amethyst variety of quartz, is examined.
Pyrex Bracelets
Dyed Bone as a Red Coral Imitation
A specimen presenting as red coral is revealed to be dyed bone.
Shattuckite from the DRC
Rare shattuckite from the Democratic Republic of Congo, as seen at the Tucson Gem and Mineral Show.
Assemblage of Synthetic Ruby in Calcite Matrix
Material set in a calcite matrix and represented as natural ruby is proven to be synthetic.
GIA Museum Exhibits in New York
A brief look at GIA's permanent museum exhibit at the New York lab and campus.
Jewelry Shanghai 2014
An insider look at the May 2014 show, held at the Shanghai Word Expo Exhibition & Convention Center.