G&G Data Depository

This depository contains material that is supplementary to articles published in Gems & Gemology. Detailed descriptions of methods, extensive tabular material, and additional data or images may be submitted by authors and/or recommended by the editors for inclusion in the depository.

Important Note: Depository material has not undergone the full G&G review/revision process. Questions on depository items should be directed to the person who submitted the item.

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• Source: Robert E. Kane et al.," A Gemological Pioneer: Dr. Edward J. Gübelin, " Winter 2005, pp. 298–327.
  Chronological Bibliography of Articles by Edward J. Gübelin (1/18/06)
  Submitted by Robert E. Kane 

• Source: Shane F. McClure et al., "Gem News International: Tenebrescent scapolite from Afghanistan," Fall 2005, pp. 269–271.
  Video Showing Tenebrescence in Scapolite from Afghanistan (10/18/05)
  Connection Speed: [Low 56k] [Med 100k] [Hi 256k]
  Note: You will need to have the free QuickTime player installed on your computer to view this video clip.
  Submitted by Brendan M. Laurs

• Source: J.C. Zwaan et al., "Emeralds from the Kafubu Area, Zambia," Summer 2005, pp. 116–148.
  Table 1: Local Geological Terminology for the Kafubu Emerald Area (8/18/05)
  Table 2: Chemical Composition of Zambian Emeralds by Electron Microprobe (8/18/05)
  Figure: Fluid Inclusions in Zambian Emerald Containing CO₂ and CH₄ (8/18/05)
  Submitted by Brendan M. Laurs