https://www.gia.edu/gems-gemology/spring-2015-gemnews-rare-stones-in-demand
Rare material seen at the GJX show in February 2015.
in demandgems gemologyrarestones
https://www.gia.edu/gems-gemology/summer-1999-sapphire-garnet-kalalani-seifert
Located just 3 km south of the famous Umba locality, the geologically similar Kalalani area hosts deposits of gem-quality sapphire.
tanga provincegems gemologysapphiregarnettanzania
https://www.gia.edu/gems-gemology/fall-1993-synthetic-red-diamond-moses
Two dark brownish red faceted stones, recently submitted to the GIA Gem Trade Laboratory for standard origin-of-color reports, were found to be treated...
in the tradered diamondstwotreatedcolor
https://www.gia.edu/gems-gemology/summer-1992-lab-notes
This section, from the Summer 1992 issue of Gems & Gemology, is a compilation of interesting finds from GIA's laboratories.
lab notesgems gemologysummer
https://dekhocampus.com/courses/gemology
gemology
https://www.gia.edu/gems-gemology/winter-2015-gemnews-golden-coral-imitated-plastic
A bracelet created to simulate the properties of golden coral is proven to be a plastic imitation.
golden coralgems gemologyplastic
https://mimosaapartment.comwww.aigsthailand.com/Timeline-CN
International Gemology School in Thailand Asia, Study Gem in Bangkok Thailand, Gem Laboratory in Bangkok Thailand, Gemstone Lab Report, gem school
gemschool
https://www.gia.edu/gems-gemology/winter-2011-garnet-magnetic-hoover
Quantitative measurements of magnetic susceptibility combined with RI or SG data can provide an easy and inexpensive way of inferring garnet composition.
magnetic susceptibilitygarnetcompositionpropertiesgems
https://www.gia.edu/gems-gemology/summer-1984-pegmatite-shigley
A survey of the current gemological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline, and topaz.
gems gemologybearingpegmatitesreview
https://www.gia.edu/gems-gemology/summer-2019-microworld-purple-fluorite-inclusion-emerald-russia
The second instance of Russian emerald with a rare purple fluorite inclusion may hint at origin.
from russiagems gemologypurplefluoriteinclusion
https://ho-group.com/Membership-EN
International Gemology School in Thailand Asia, Study Gem in Bangkok Thailand, Gem Laboratory in Bangkok Thailand, Gemstone Lab Report, gem school
gemschool
https://www.aigsthailand.com/PayNow-EN
International Gemology School in Thailand Asia, Study Gem in Bangkok Thailand, Gem Laboratory in Bangkok Thailand, Gemstone Lab Report, gem school
gemschool
https://www.gia.edu/JP/gems-gemology/spring-2015-labnotes-artificially-irradiated-color-change-diamonds
Examination of two chameleon diamonds reveals color enhancement through artificial irradiation.
gems gemologyartificiallyirradiatedcolorchange
https://www.gemsociety.org/course/mineralogy-certification/
Learn the fundamentals of mineralogy, from optical and physical properties to classification, crystallography and testing. Become an IGS-certified Mineralogy...
mineralogycertificationcourseonlinediamonds
https://www.gia.edu/gems-gemology/winter-2016-danburite-luc-yen-mining-area-vietnam
Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency.
a newin theluc yenfinddanburite
https://www.gia.edu/gems-gemology/fall-2015-labnotes-unusual-graining-structure-pink-diamond
A Very Light pink diamond showing a uniform plane of color intersecting with a cone of strain that fit perfectly into a colorless hole is studied at the...
in pinkgems gemologyunusualgrainingstructure
https://www.gia.edu/gems-gemology/spring-1993-gem-news-international
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry...
news internationalgems gemologyspring
https://www.gia.edu/gems-gemology/spring-1998-diamond-cutting-india-sevdermish
this article reviews the rise of the modern diamond cutting industry in India and its impact on the world diamond trade
the risediamond cuttingprominencemodernindustry
https://www.gia.edu/gems-gemology/fall-1991-rubies-tanzania-hanni
The authors present the mineralogical and gemological properties of rubies found recently in the Morogoro area of Tanzania that have many features in common...
from thegems gemologynewrubiesmorogoro
https://www.gia.edu/gems-gemology/fall-2020-labnotes-pearl-discovered-in-edible-oyster
A large natural pearl discovered in an edible oyster offers insight to the scientific pearl community.
edible oysterfrom thectpearldiscovered
https://www.gia.edu/gems-gemology/winter-2017-microradiography-pearls-data-supplement
Compares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a...
real timepearlscomparisondetectorsgems
https://www.gia.edu/gems-gemology/fall-2015-gemnews-serpentine-cabochon-unusual-olive-green-color
A green cabochon from China resembling jadeite is found to be antigorite, a member of the serpentine group.
olive greengems gemologyserpentinecabochonunusual
https://www.gia.edu/gems-gemology/winter-2008-gem-news-international
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry...
news internationalgems gemologywinter