A unique art piece crafted with more than 9,200 diamonds is examined at GIA’s Carlsbad laboratory.

Examination of rock crystal quartz spheres reveals rose-like hematite inclusions.

Examination of polished quartz samples reveals crystal inclusions identified as hedenbergite and sphalerite.

A look at Harvey Liberman’s career as a renowned diamond cutter in New York’s Diamond District.

An unusual area of granular texture lining the cavity of a ruby indicates synthetic overgrowth.

A large purplish pink pezzottaite with growth banding and tube inclusions is examined in the Carlsbad laboratory.

Reports on the study of sapphire samples from a newly discovered source in southern Tanzania.

A non-bead cultured pearl with six cores is discovered in a large lot of pearls submitted to the Mumbai laboratory.

The contents of two “Paraíba matrix” samples are analyzed.

Skeletal formations of metallic reflective thin films are observed in a pinkish orange morganite.

An orangy pink morganite specimen from Madagascar contains hundreds of yellow helvine crystals aligned on a single plane.

Reports on the study of garnet samples from a source in northern Vietnam.

The inclusion scene in a Russian emerald resembles fireworks illuminating a night sky.

A 12.62 ct trapiche emerald with areas of goshenite is analyzed in GIA’s Tokyo laboratory.

The Carlsbad laboratory reports on two HPHT-grown diamonds with interesting sector-dependent color zonation.

A report on the first documented arzakite inclusion in a Mogok ruby.

A CVD-grown diamond submitted to the Surat laboratory exhibits a growth remnant appearing as a colored band.

An inside look at the mid-2024 offerings from the Gemfields emerald and ruby auctions.

A suite of seven rare haüyne stones are examined in the Carlsbad laboratory.

Presents findings from observations of oval-, pear-, and marquise-shaped diamonds, laying the groundwork for a fancy cut grading system.