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Charles E. Ashbaugh III
Amethyst Mining in Brazil
David Stanley Epstein
Opals from Opal Butte, Oregon
Kevin Lane Smith
A Gemological Look at Kyoceraís New Synthetic Star Ruby
John I. Koivula and Robert C. Kammerling
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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