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Research
Fall 1986 G&G Lab Notes
This section, from the Fall 1986 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
An Examination of Four Important Gems
Several famous and historical gemstones in the Smithsonian's collection are examined and reported on.
A Survey of the Gemstone Resources of China
China has identified many deposits with significant potential to produce gemstones; various species are discussed.
Art Deco: The Period, the Jewelry
An overview of the jewelry produced during the Art Deco period.
Ruby in Diamond
The first substantiated identification of corundum (var. ruby) occurring as an inclusion in natural diamond is presented.
Diamond Care and Cleaning Guide
Learn about diamond's durability and how to care for your diamond jewelry.
Diamond History and Lore
Jeweled Butterflies Welcome Spring
The butterfly has enchanted jewelry designers for centuries because of its breathtaking beauty. There’s also another reason this “flying flower” has transfixed the imagination. The butterfly is a universal symbol of transformation.
Design Inspiration: Historic Jewelry
All that was old is new once more – at least when exploring historic trend-setting jewelry styles of the 19th and 20th centuries.
Engagement Rings through the Ages
The engagement ring’s romantic traditions resonate throughout time. The Romans first introduced the betrothal ring as a plain, iron hoop.
