Reports on a visit to a shell nucleus manufacturer and two pearl farms in northern Vietnam, which is emerging as a notable producer.

A large natural pearl discovered in an edible oyster offers insight to the scientific pearl community.

“Star cruisers” formed of ferrocolumbite seem to fly in a large topaz crystal from the Shigar Valley in Pakistan.

Presents spectroscopic and chemical analysis of a new variety of turquoise with a rare raindrop pattern with saturated colors.

GIA Johannesburg identifies fraudulent GIA inscriptions on several synthetic moissanites submitted as diamonds.

近日，GIA 纽约鉴定所有幸检验了一颗迷人的珍珠，它的故事更加引人入胜，快来一探究竟吧。

Diaspore, an orthorhombic aluminum oxide hydroxide mineral with the formula AlO(OH), is a relative newcomer to the jewelry scene, with some stones possessing a captivating ability to change color between pale green, yellow, pink, and purple when viewed in different sources of light.

Many legends are told about the history of the Chivor emerald mine.

There’s only one place on earth where the general public can prospect for diamonds directly from a primary kimberlite pipe: Crater of Diamonds State Park.

Lee Downey, owner of Artifactual (Tucson, Arizona), spoke with us in early 2020 about his 35 years in the fossil ivory carving trade and the impact of ivory bans on his business.

Raman spectroscopy confirms sea-blue beads with a similar appearance to Larimar are actually quench-crackled chalcedony.

In recent decades, jadeite prices have risen dramatically. Driven by profit, a variety of imitations are found in the jadeite jewelry market.

Researchers from De Beers Group Technology present a technique that expands on the surface luminescence used in the DiamondView instrument to provide additional imaging information and quickly distinguish colorless or near-colorless natural diamond from laboratory-grown diamond.

Scientists in Russia construct an origin story through the analysis of petrified wood popularly used in the souvenir trade.

Whimsical windmill-like inclusions are found in a high-quality orange specimen of the rare mineral sphalerite.

A master gem carver bases his latest design off a stunning stained glass window when attempting the world’s largest known cut kunzite.

A rough diamond crystal weighing 4.05 ct was observed with radiation staining on its surface.

Presents the four major groups of defects responsible for the color in nearly all yellow and orange diamonds.