Special Report on Red Feldspar, Part 1
Contents
Introduction—Red Feldspar: A Puzzle to Fix
A Mine Trip to Tibet and Inner Mongolia: Gemological Study of Andesine Feldspar
Ahmadjan Abduriyim (Gemmological Association of All Japan-ZENHOKYO Laboratory)
The Red Feldspar Project
George R. Rossman (California Institute of Technology)
Copper Diffusion in Plagioclase
John L. Emmett and Troy R. Douthit (Crystal Chemistry, Brush Prairie, Washington)
Observations on Identification of Treated Feldspar
Shane F. McClure (GIA Laboratory, Carlsbad)
Observation on Effects of Heating and Copper Diffusion in Feldspar
Kamolwan Thirangoon (GIA Laboratory, Bangkok)
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Lead Glass-Filled Rubies