GIA Acquires 2,665-Piece Inclusion Collection
The Gemological Institute of America has acquired a collection of gems, minerals and crystals assembled over six decades by microscopist John Koivula.
Updated on Nov. 8, 2026 in Jewelry
The Gemological Institute of America has acquired a collection of 2,665 gems, minerals and crystals containing unusual inclusions. The collection was assembled over six decades by microscopist John Koivula.
Why it matters
The specimens document the internal features of gemstones, material that supports gem identification and origin determination. The collection expands the reference resources available to gemological research and education in the United States.
The collection totals 2,665 gems, minerals and crystals, cataloged in a custom database. Its full value and the number of specimens selected for exhibition beyond the planned February 2027 displays were not disclosed.
The players
Gemological Institute of America (GIA)
A nonprofit gemological research and education institution based in Carlsbad, California, known for its gem grading and identification standards.
John Koivula
A GIA microscopist and gemological photographer who joined the institute in 1976 and is recognized for advancing gem inclusion photomicrography.
The details
Koivula, who joined GIA in 1976, built the collection through photomicrography and helped establish fiber-optic illumination as a standard gemological technique. GIA plans to use the material for education, research, gem identification and origin services, and an expanded reference collection, and is preparing a large-format book of photomicrographs.
Timeline
1976: John Koivula joins the Gemological Institute of America.
November 8, 2026: GIA's acquisition of the collection is reported.
February 2027: Selected specimens are scheduled for display at the AGTA GemFair and the Tucson Gem and Mineral Show.
Industry Context
The acquisition extends the Gemological Institute of America's established laboratory reference program, which has long set identification standards for the U.S. jewelry trade. Adding a six-decade inclusion archive strengthens the documentation base used to determine gem origin and treatment.
Buyers of colored gemstones and diamonds rely on identification and origin reports, and expanded reference collections support more consistent grading. Collectors and students in the United States may see the specimens at the February 2027 Tucson shows.
The takeaway
Reference collections of documented inclusions give gemologists a verifiable baseline for identifying stones and tracing origin. Consumers buying jewelry benefit when identification standards rest on this kind of archived evidence.
What happens next
Selected specimens are scheduled for exhibition at the AGTA GemFair and the Tucson Gem and Mineral Show in February 2027.
Further reading
Explore more in Jewelry for related coverage of gem identification and the trade.
Source note: This article includes information reported by Idexonline.
