The company will have deals on precious metals testers as well as the latest in lab-grown diamond detection technology and security.

Michelle Graff

Moses, who will leave the lab in May after nearly 50 years, discusses his start in the business, gemstones that stand out, and what’s next.

Michelle Graff

Moses, who started at GIA’s Santa Monica lab in 1976, will leave the Gemological Institute of America in May.

Natalie Francisco

IGI is buying the colored gemstone grading laboratory through IGI USA, and AGL will continue to operate as its own brand.

Michelle Graff

Pete’s boundless curiosity extended beyond diamond cut and he was always eager to share his knowledge with others, no matter the topic.

Michelle Graff

Starting Jan. 1, customers can request the service for opal, peridot, and demantoid garnet.

Lauren McLemore

GIA is offering next-day services for natural, colorless diamonds submitted to its labs in New York and Carlsbad.

Sponsored by the Gemological Institute of America

The workshop will give attendees the chance to try out and ask questions about three different diamond verification instruments.

The stone’s two zones, one pink and one colorless, may have formed at two different times, the lab said.

Lauren McLemore

It will classify lab-grown stones into one of two categories, “premium” or “standard,” in lieu of giving specific color and clarity grades.

Michelle Graff

Sriram “Ram” Natarajan is now GIA’s senior vice president of laboratory operations and is based out of the lab’s headquarters in Carlsbad.

Michelle Graff

Sponsored by the Gemological Institute of America

Pritesh Patel, the lab’s chief operating officer, will take over as president and CEO of GIA.

Lauren McLemore

It will quit assigning the stones specific color and clarity grades in favor of applying “new descriptive terminology.”

Michelle Graff

The company has joined other labs, including GIA and Lotus Gemology, in adopting the Chinese term for "jadeite jade."

Lauren McLemore

Located in Bangkok, the laboratory is Gemological Science International’s 14th location worldwide.

Michelle Graff

The lab has adjusted the scale it uses for nacre grading.

Lauren McLemore

Sponsored by GCAL by Sarine

Sapphires, emeralds, and rubies are finding their place in a U.S. market captivated by the gemstones once referred to as “semi-precious.”

Lauren McLemore

Sponsored by Instappraise

It includes pricing for unenhanced Colombian emeralds in the fine to extra fine range.

Lauren McLemore

Sponsored by the Gemological Institute of America

GIA’s labs in Dubai and Hong Kong are now accepting larger diamonds in light of the “logistical challenges” presented by the new tariffs.

Michelle Graff

The grading lab said the search for her successor is underway.

Lauren McLemore