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.

• Source: A. Abduriyim et al., “Characterization of ‘Green Amber’ with Infrared and Nuclear Magnetic Resonance Spectroscopy,” Fall 2009, pp. 158–177.
  Photomicrographs
  FTIR and NMR Spectra
  Table DD-1: FTIR Spectral Features of Amber and Copal Before and After Heat Treatment
  Table DD-2: Chemical Shift (ppm) of ¹³C NMR Spectral Features of Amber and Copal Before and After Heat Treatment
  Parameters Used for NMR Spectroscopy

• Source: K. A. Mychaluk, “Update on Ammolite Production from Southern Alberta, Canada,” Fall 2009, pp. 192–196.
  Additional Photos

• Source: "Gem News International: Demantoid from Ambanja, Madagascar," Fall 2009, pp. 218–219.
  Additional Photos

• Source: "Gem News International: Enstatite from Pakistan,” Fall 2009, p. 219.
  Photomicrographs and Absorption Spectra

• Source: "Gem News International: New Tourmaline Production from Keffi, Nigeria,” Fall 2009, pp. 227–228.
  Average Chemical Composition of Tourmaline by Electron Microprobe

• Source: "Gem News International: Gem Cutting Notes Available," Fall 2009, p. .232
  Additional Photos

• Source: "Book Reviews: Famous Diamonds, 5th ed.," Fall 2009, p. S1
  Additional Material

• Source: Paul B. Merkel and Christopher M. Breeding, "Spectral Differentiation Between Copper and Iron Colorants in Gem Tourmalines," Summer 2009, pp. 112–119.
  Additional Spectra
  Average LA-ICP-MS Data (ppm by Weight) of the Tourmaline Samples

• Source: Shyamala Fernandes and Gagan Choudhary, "Gem-Quality Andalusite from Brazil," Summer 2009, pp. 120–129.
  Supplementary Photos

• Source: "Lab Notes: 'Black' Diamond with Deep Violet Color," Summer 2009, p. 135.
  Supplementary Figure
  Submitted by Christopher M. Breeding and Kimberly M. Rockwell

• Source: "Lab Notes: Rare Type IIb Gray-Green Diamond," Summer 2009, p. 136.
  UV-Visible–Near Infrared Spectrum

  Submitted by Paul Johnson and Jason Darley

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• Source: "Gem News International: Andradite from Erzincan, Eastern Turkey," Summer 2009, p. 142.
  Electron Microprobe Data

  Submitted by Alethea Inns and Brendan M. Laurs

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• Source: "Gem News International: Colorless Petalite and Pollucite from Laghman, Afghanistan," Summer 2009, pp. 150–151.
  Infrared Spectra
  Submitted by Erica Emerson and Paul Johnson
  Faceting Notes
  Submitted by Robert C. Buchannan

• Source: "Gem News International: Cambodian Zircon Mining," Summer 2009, pp. 152–153.
  Supplementary Photos
  Submitted by M. H. Smith and W. A. Balmer

• Source: Carolyn van der Bogert et al., "Gray-to-Blue-to-Violet Hydrogen-Rich Diamonds from the Argyle Mine, Australia," Spring 2009, pp. 20-37.
  Supplemental Material