A transparent feather observed in a natural diamond resembles a conch shell.

An unheated purplish red ruby cabochon displays a white double-star phenomenon.

The Tokyo laboratory reports on GIA’s first submission of gadolinite.

The gem and jewelry industry mourns the loss of one of its true leaders.

Several lots sold during the spring auction season far exceeded their presale estimates.

An in-depth look at Clarity Diamond’s CVD facility in Austin, Texas.

A look at JTV’s history, current activities, and impact on the industry.

One-of-a-kind gemstone keycaps for mechanical keyboards were exhibited at the 22nd Street show.

Researchers of the Tairus joint venture have developed the technology for the hydrothermal growth of gem-quality crystals of synthetic sapphire.

A new find of fluorite from Nigeria was exhibited at the Pueblo show.

Two strongly orangy pink morganites with residual radioactivity were studied.

Two flame-fusion synthetic sapphires with a Paraíba-like color are examined at GIA’s Carlsbad lab.

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

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

A report from the 37th IGC, held in late October 2023 in Tokyo.

Large blue and pink diamonds were among the top lots of the fall auction season, including the most expensive auction jewel of 2023.

Several G&G contributors are recognized for their work on the latest volume in the Reviews in Mineralogy & Geochemistry series.

The most important source of yellow gem elbaite is the Canary mining area in the Lundazi District of eastern Zambia.

An review of the Oregon sunstone seen at the Tucson gem shows.