A successful spring season set high expectations for colored diamonds at auction in late 2022.

The Gemological Institute of America (GIA), the leading gemological grading and identification organization, is now offering a lower-cost GIA Laboratory-Grown Diamond Report - Dossier.

The Gemological Institute of America (GIA), the leading gemological grading and identification organization, is now offering a lower-cost GIA Laboratory-Grown Diamond Report - Dossier.

The start of 2023 marks a significant milestone in the digital transformation of the global diamond industry - the launch of the fully digital GIA Diamond Dossier, the most widely available diamond grading report in the world.

During routine color stability testing of sapphires, GIA experts observed an unusual gain of orange or yellow coloration to a padparadscha-like color or even to pure orange.

GIA, the leader in gemological education, research and science-based gem identification and grading services, is revamping the GIA Graduate Jeweler program in collaboration with master goldsmith and award-winning jewelry designer Alan Revere.

100 GIA researchers, leading academics, independent industry experts and GIA Governors and executives met in person and virtually at GIA’s global headquarters in Carlsbad, Calif., November 1-3 for the Institute’s 16th annual research meeting.

At their recent Board meeting at the Institute’s California headquarters, the GIA Board of Governors welcomed two new Governors, new Chair and Vice Chair of the Board, and said goodbye to four departing members.

An examination of a beaded bracelet reveals calcite powder to enhance the imitation of natural root amber.

Explores the use of gem materials as pigments in works of art, from the earliest cave paintings to the modern era.

A comprehensive look at the gemological features and advanced analysis of blue and fancy-color sapphire from the agricultural area of Muling, China.

Examines the current available means of determining the geographic origin of gem-quality diamond, which are based largely on trace element and isotopic characteristics. For now, no method exists for determining the provenance of a random individual diamond.

The Perot Museum of Nature and Science promotes public interest in mineral studies with The Year of Mineralogy exhibit.

Examines the variety of fluid inclusions contained within diamond, which reflect the natural processes that created and modified these gems deep within the earth’s mantle.

A detailed spectroscopic investigation of the color of pink spinel reportedly from the Kuh-i-Lal deposit in the Pamir Mountains of Tajikistan.

A field gemology team from GIA provides an update on the ruby mining operations around Montepuez.

Rose channels and twinning planes are observed in light purplish blue synthetic corundum.

A report on the first-ever Turquoise United conference in Albuquerque, New Mexico.