• Cover of Winter 1999 Gems & Gemology issue, featuring golden art object holding cylindrical green gem

Winter 1999

  • $15.00

The PDF version of this issue is available at no charge. Visit

Classifying Emerald Clarity Enhancement at the GIA Gem Trade Laboratory
Shane F. McClure, Thomas M. Moses, Maha Tannous, and John I. Koivula

Clues to the Process Used by General Electric to Enhance the GE POL Diamonds
Karl Schmetzer

Diopside Needles as Inclusions in Demantoid Garnet from Russia: A Raman Microspectrometric Study
Michael S. Krzemnicki

Garnets from Madagascar with a Color Change of Blue-Green to Purple
Karl Schmetzer and Heinz-J¸rgen Bernhardt
1999 Annual Index

Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).

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SKU: 430001