Advanced testing helps to identify the largest gahnospinel seen at any GIA laboratory.

Susi Smither discusses her sustainable, responsible, and ethically based business practices.

The age of something is fundamental. Humans, animals, wine, cars, and antiques are viewed and understood in the context of their age.

A 283.74 ct rough tsavorite from Merelani, Tanzania, yields a square cushion-cut gemstone weighing 116.76 ct.

An update on activity at the Coscuez emerald source, as well as ruby deposits in Mozambique.

Mother-and-son team Laurie and Geoffrey Watt (Mayer & Watt, Maysville, Kentucky) noted that while there were plenty of customers at the AGTA show this year, the formula for success was a wide selection of materials and competitive pricing.

Significant amounts of gem-quality sodalite/hackmanite—some unusually transparent—have been produced.

Thoughts from a longtime Tucson exhibitor on responsible practices and the changing market trends.

The World Jewellery Confederation (CIBJO) released the first edition of the Responsible Sourcing Book in January 2019.

Bangles resembling nephrite and jadeite were not what they appeared to be.

A graduate of GIA’s Jewelry Design program in Taiwan is the recipient of the Buccellati Award.

Trapiche-like ruby from Kashmir shows a well-formed fixed six-rayed pattern.