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Tourmaline
Tourmalines have a wide variety of exciting colors with one of the widest color ranges of any gem.
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Headwinds Slow 2019 Vegas Business, Lab-grown Diamonds Proliferate
Decent demand for finished jewelry, but less for loose gems. Plus: Lab-grown diamonds and responsible, sustainable business practices.
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Article
Emerald: The Superstar of Trapiche Gemstones
Trapiche emeralds, which display a distinct six-spoke wheel pattern, set the standard as some of the finest and most spectacular crystals unearthed.
Read MoreAppendix 1: Comparison of LA-ICP-MS and EPMA Data, Part 1
Comparison of LA-ICP-MS and EPMA Data, Part 1
Read MoreAppendix 2: Comparison of LA-ICP-MS and EPMA Data, Part 2
Comparison of LA-ICP-MS and EPMA Data, Part 2
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A New Method for Determining Gem Tourmaline Species by LA-ICP-MS
Presents a simplified but comprehensive classification of gem tourmaline species based on quantitative measurement of six common major elements.
Read MoreAppendix 3: Calculation Method for Tourmaline Species Classification Used Here
Calculation Method for Tourmaline Species Classification Used Here
Read MoreAppendix 4: Guideline for Simplified Distribution of Site Occupancy for LA-ICP-MS Data
Guideline for Simplified Distribution of Site Occupancy for LA-ICP-MS Data
Read MoreAppendix 5: Simplified Tourmaline Species Classification for LA-ICP-MS Data
Simplified Tourmaline Species Classification for LA-ICP-MS Data
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Article
Adapting to Changing Workplaces
GIA Career Service advisors offer tips on how to navigate the changing workforce and consumer attitudes for success in the gem and jewelry industry.
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Article
Tucson Visit Spurs Geology Professor, Publisher to Head Back to School
Geologist, publisher earns his GG so he can share more information on gem materials with visitors to Geology.com, his Earth Science website.
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