An overview of the Winter 2023 Gems & Gemology content.

Examines a technique for setting cut garnets on glass objects, invented by Claudius vom Creutz of Nuremberg in the late sixteenth century.

The GIA New York laboratory is now accepting GIA graded diamonds for the same-day confirmation service that was announced on January 9.

GIA is taking strong action in response to reports of fraudulent GIA inscriptions on laboratory-grown diamonds cut to nearly match GIA graded natural diamonds.

GIA, whose expertise spans gemological research, laboratory services and education, is introducing the GIA Jade Report, featuring additional gemological information and a sleek, user-friendly layout to enhance the overall report experience for both industry professionals and consumers.

Dr. John W. Valley, a member of the GIA Board of Governors since 2014, retired from the Board following their regular annual meeting held in early November in Carlsbad, CA.

加州卡爾斯巴德 ─ 2023年11月20日 ─ 自2014年起擔任GIA理事會成員的約翰‧W‧威利（John W. Valley）博士，11月初在加州卡爾斯巴德舉行的年度例會後正式退任。理事會及GIA管理層感激他在任期間作出重大貢獻，特別以其名字命名一項GIA獎學金，以表敬意。

Anna Martin to Retire from GIA

Anna Martin, GIA’s senior vice president of Institute and industry relations, will retire from GIA on December 31, 2023, after a very successful nine years with the Institute, 14 years on the GIA Board of Governors and more than 40 years as one of the most well-known and respected leaders in the gem and jewelry industry.

The more than 60 scientists, engineers, gemologists and technicians of GIA’s global research team met November 1-3 at the Institute’s world headquarters in Carlsbad, CA.

A recap of the second annual Turquoise United Conference.

A report on the seventh annual Chicago Responsible Jewelry Conference.

Examination of a heart-shaped ruby reveals a zinc glass filler.

A greenish blue spinel displays a large network of needle-like dislocations clustered in a six-rayed star pattern.

A precipitation of an unidentified mineral creates a complex moiré pattern in a fissure of a purple spinel.

Fiber-optic illumination reveals rectilinear zigzag-patterned films with vibrant colors in a blue sapphire.

Blade-like magnetite inclusions developed from a healed fracture in peridot resemble a dark, rainy afternoon in a lakeside city.

An 8.33 ct rectangular heliodor displays two tourmaline inclusions and a thin band of fluids.