Showing posts with label Nathan D. Renfro. Show all posts
Showing posts with label Nathan D. Renfro. Show all posts
Tuesday, November 05, 2019

Separation Of Kornerupine And Prismatine

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Follow the standard gem identification methodology. Useful link: https://www.gia.edu/gems-gemology/summer-2019-labnotes-separation-of-...
Monday, September 30, 2019

Inclusions In Natural, Treated, Synthetic, And Imitation Opal

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Take a look. Useful link: https://www.gia.edu/gems-gemology/summer-2019-suggested-reading-opal-chart
Saturday, August 24, 2019

Inclusions In Natural, Treated, Synthetic, And Imitation Opal

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Take a look at a wide range of interesting inclusions in opal. Useful link: https://www.gia.edu/gems-gemology/summer-2019-suggested-rea...
Sunday, April 07, 2019

Chart: Inclusions In Natural, Synthetic, And Treated Diamond

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A good reference chart from the GIA. Useful link: https://www.gia.edu/gems-gemology/winter-2018-inclusions-natural-synthetic-treated-diam...
Tuesday, December 04, 2018

Gemological Characterization Of Sapphires From Yogo Gulch, Montana

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Take note. Useful link: https://www.gia.edu/gems-gemology/summer-2018-gemological-characterization-of-sapphires-from-yogo-gulch-montana
Friday, October 05, 2018

Discovery Of Color-Change Chrome Grossular Garnets From Ethiopia

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Take a look. Useful link: https://www.gia.edu/gems-gemology/summer-2018-gemnews-discovery-of-color-change-chrome-grossular-garnets-from-e...
Wednesday, September 05, 2018

Gemological Characterization Of Sapphires From Yogo Gulch, Montana

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A must visit. Useful link: https://www.gia.edu/gems-gemology/summer-2018-gemological-characterization-of-sapphires-from-yogo-gulch-montan...
Thursday, March 01, 2018

Inclusions In Natural, Synthetic, And Treated Ruby

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A good comparison study. Useful link: https://www.gia.edu/gems-gemology/winter-2017-inclusions-natural-synthetic-ruby
Wednesday, December 13, 2017

Blue-Green Pyrope-Spessartine Garnet With High Vanadium

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Take a look. Useful link: https://www.gia.edu/gems-gemology/fall-2017-gemnews-blue-green-pyrope-spessartine
Saturday, September 30, 2017

Inclusions In Natural, Synthetic, And Treated Sapphire

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Take a look. Useful link: https://www.gia.edu/gems-gemology/summer-2017-inclusions-sapphire