Article Search Results

Articles (7)

Lab Notes (7)

Gemmology (7)

See All Gemstones

XClear Selections

Chemical Analysis of Zircon

Akhil Sehgal, July 31, 2015

Trace-element analysis is used to identify metamictisation, treatment and growth conditions of zircon.

Tenebrescent Zircon

Ratima Suthiyuth, July 25, 2014

Colour modification is observed in a reddish orange zircon at the Bangkok laboratory.

Summer 1997 G&G Lab Notes

June 1, 1997

This section, from the Summer 1997 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

Summer 1991 G&G Lab Notes

June 1, 1991

This section, from the Summer 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

Summer 1989 G&G Lab Notes

June 1, 1989

This section, from the Summer 1989 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.

Summer 1985 G&G Lab Notes

June 1, 1985

This section, from the Summer 1985 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.

Summer 1984 G&G Lab Notes

June 1, 1984

This section, from the Summer 1984 issue of Gems & Gemmology, is a compilation of interesting finds from GIA's laboratories.