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April 07, 2026 06:00 ET | Source: Gemological Institute of America, Inc.

GIA Examines the World’s Most Extraordinary Gemstones

The Gemological Institute of America (GIA) examines the world's most extraordinary gemstones known for their rarity, history and cultural significance.
August 28, 2025 08:00 ET | Source: Gemological Institute of America, Inc.

GIA Examines the World’s Second Largest Diamond

GIA Examines the World’s Second Largest Diamond. Type IIa diamond of remarkable size with exceptional gemological qualities