Research Article Search Results

Extraordinary Large Bicolor Natural Rough Diamond

A 37.41 ct natural rough diamond with distinct pink and colorless zones is examined at GIA’s Botswana laboratory.

Read more

Imitation Seed Pearl with Blue X-Ray Fluorescence

Read more

“Sugar Plum” in Titanium-Diffused Blue Sapphire

Read more

HPHT-Processed Natural and Laboratory-Grown Diamonds with Counterfeit Inscriptions

Read more

Quarterly Crystal: Unique Phantom in Diamond

Read more

“Goose Bumps” on South Sea Pearl

Read more

Unusual Patterns in Diamonds Composed of Dark Micro-Inclusions

Read more

Three Large Natural Hollow Pinctada radiata Pearls

Read more

Exceptional Nacre Thickness of Hybrid Akoya Bead Cultured Pearls

Read more

Diamond Trader Ishaia Gol

Read more

GIA 7 Pearl Value Factors: An Update on Nacre Classification

Read more

Emeralds and Beryl from Kazakhstan and Ukraine

Read more

PreviousPage 3 of 63Next

You Might Also Like

YMAL AJP
AJP®: New 5-Day Program Offered Worldwide
Learn About NextGem
GIA NextGem™ Diamond Training for Retail
Explore GIA Laboratory Promotional Offers
Explore GIA Laboratory Promotional Offers
Shop the GIA Store
Shop the GIA Store