GIA Lab Notes. A fine example + untreated.
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Wednesday, November 04, 2020
Exceptional Purple Montana Sapphire
HPHT Laboratory-Grown Pink Diamond With Unstable Color
GIA Lab Notes. Consumers beware.
Tuesday, November 03, 2020
Pink Mozambique Sapphire
GIA Lab Notes. A unique stunning pink colored sapphire. Hats off the gem cutter for bringing out the best color.
Useful link: https://www.gia.edu/gems-gemology/summer-2020-labnotes-pink-mozambique-sapphire
HPHT-Processed CVD Laboratory-Grown Diamonds With Low Color Grades
GIA Lab Notes. Diamond dealers, jewelers and consumers should take note.
Monday, November 02, 2020
Negative Crystal Containing A Mobile CO2 Bubble In Blue Sapphire Heated With Pressure
GIA Lab Notes. For gem inclusion collectors. Take a look.
Useful link: https://www.gia.edu/gems-gemology/summer-2020-labnotes-negative-crystal-containing-bubble-in-sapphire
Quench-Crackled Dyed Blue Chalcedony Resembling Larimar
Sunday, November 01, 2020
Saturday, October 31, 2020
Sunday, August 02, 2020
Bismuth Glass-Filled Burmese Star Ruby
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-bismuth-glass-filled-burmese-star-ruby
Friday, July 31, 2020
Corundum Inclusions In Gem Diamond
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-corundum-inclusions
Formation Of The Matryoshka Diamond From Siberia
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-matryoshka-diamond-siberia
Solid Carved Dark Gray Diamond Ring
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-solid-carved-dark-gray-diamond-ring
Thursday, July 30, 2020
Saltwater Bead Cultured Pearl With Laminated Nucleus
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-cultured-pearl-laminated-nucleus
Clarity-Enhanced Glass Imitating Emerald
Useful link:
https://www.gia.edu/gems-gemology/spring-2020-labnotes-glass-imitating-emerald
Friday, January 24, 2020
Vlasovite
Useful link:
https://www.gia.edu/gems-gemology/fall-2019-labnotes-vlasovite
Saturday, December 14, 2019
Dyed Serpentine Imitating Sugilite
Useful link:
https://www.gia.edu/gems-gemology/summer-2019-labnotes-dyed-serpentine-imitating-sugilite
Wednesday, December 04, 2019
Thursday, August 29, 2019
Color-Change Spessartine Garnet: A First Report
Useful link:
https://www.gia.edu/gems-gemology/summer-2019-labnotes-color-change-spessartine-garnet-first-report