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Gemmology Rocks

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25.01.2022 https://m.youtube.com/watch?feature=youtu.be&v=eYB-ocSe3oA

24.01.2022 https://www.gia.edu/opal-description

23.01.2022 https://youtu.be/-LbAWAQ9lDc

23.01.2022 https://m.youtube.com/watch?v=hfmbVPVoN4I

22.01.2022 https://youtu.be/eitvgJcEMCY

18.01.2022 https://www.facebook.com/650052291725128/posts/3280615268668804/

18.01.2022 https://youtu.be/Na5ixYQgPVo

17.01.2022 https://www.naturaldiamonds.com//natural-beauties-heavily/

16.01.2022 https://worlddiamondnews.org/the-iconic-argyle-mine-has-cl/

16.01.2022 Here's a really good article by the GIA. Fakes go back over a hundred years, five sets of jewelry in a Prague museum were checked and only one had real moldavite. https://www.gia.edu//spring-2015-gemnews-moldavites-natura

15.01.2022 https://m.youtube.com/watch?feature=youtu.be&v=BcC5ScHmocE

15.01.2022 https://m.youtube.com/watch?v=hzVR0lnvyuo&feature=youtu.be

14.01.2022 Did you know Inverell used to produce about 80 per cent of the world's sapphires? We've unearthed this 1973 ABC documentary following the booming local sapph...ire industry in northern NSW. Today, most of the world's sapphires come from Madagascar, and the local industry has dwindled to just a few family mines. : Don Sheil | ABC New England North West

14.01.2022 https://www.irocks.com/rare-chalcopyrite-balls-from-daye-ch

13.01.2022 https://www.gia.edu/gems/fall-2019-gemnews-rare-sun-diamond

11.01.2022 https://m.youtube.com/watch?feature=youtu.be&v=MYvkk5cIJVY

11.01.2022 https://m.facebook.com/story.php?story_fbid=10225808186577312&id=1411538752&sfnsn=mo

10.01.2022 EMERALD MYTH BUSTER!!! #1. Colombian emeralds are colored by chromium. Zambian are colored by vanadium. Incorrect! Chromium, vanadium and iron are the known chromophores for emerald. Colombian emeralds typically feature very low percentages of iron and moderate to high percentages of both chromium and vanadium, and it is not unusual for the V percentage to exceed that of the Cr in Colombian emeralds. Zambian emeralds typically have higher Cr and Fe, and less V than Colombian.... Sandawana, Zimbabwe emeralds have medium to high Cr and very low V. Brazil’s Fazenda Bonfim emeralds most abundant chromophore is Cr, where as V is consistently low. In Brazilian, Zambian and Zimbabwe emeralds, Cr content is typically 10-20 times higher than V content. #2. A Chelsea filter is useful in separating Colombian emeralds from other origins. Incorrect! Iron dampens the Chelsea filter reaction induced by chromium, so many emeralds from Brazil, Zambia, Ethiopia and other sources with moderate to high Cr and relatively high Fe will show no reaction. Emeralds with sufficient Cr and low enough Fe will show a pink to red Chelsea filter reaction as typical of Colombian emeralds, and has also been observed in some emeralds from Afghanistan, China, Brazil, Ethiopia, Egypt, Pakistan, Russia, Zambia and Zimbabwe. #3. Three phase inclusions of liquid, gas and solid, usually an included crystal, indicate Colombian origin. Incorrect! Three phase inclusions with gas, liquid and an included crystal are also found in emeralds from Afghanistan, Brazil, China, Ethiopia, Nigeria, Russia and Zambia. #4. Pyrite inclusions indicate Colombia origin. Incorrect! Pyrite has also been reported as an inclusion in emeralds from Madagascar, Brazil, Zambia, Afghanistan, Austria, Norway and North Carolina, USA. Special thanks to Bear Williams of Stone Group Laboratories as well as Dr. Dietmar Schwarz and M.P.H. Curti, GG of Bellerophon Gemlab, Bangkok for EDXRF emerald trace element data! References: https://www.gia.edu/doc/SP91A2.pdf https://www.gia.edu/gem/fall-2019-emerald-from-malipo-china https://www.gia.edu//Emeralds-Mananjary-Region-Madagascar- http://www.gemstone.org/incolor/IncolorEmerald/index.html https://www.gia.edu/doc/SP12A1.pdf https://search.proquest.com//d66b3420fb5ef5d6aebf91975d/1 https://www.gemstone.org/incolor/40/104/ https://www.hubertgem.com/emerald-origins-history-and-iden/ https://www.avantes.com//346-avaspec-2048-an-innovati/file CREDIT JEFFREY BERGMAN See more

10.01.2022 https://youtu.be/4o-9t5C6FHY

10.01.2022 https://m.facebook.com/story.php?story_fbid=372817894128266&id=105245087552216

09.01.2022 Do you want to be a millionaire? Take a leaf out of Tanzanian mine owner Saniniu Laizer’s book. His workers have just discovered the two largest known tanzanite... crystals to date. Tanzanitethe December birthstoneis a violet to blue gemstone found only in one country on earthTanzania! One gemstone crystal found weighs 9.27kg (20.44lb) while the other weighs 5.10kg (11.24lb). The Bank of Tanzania bought both dark violet-blue crystals for roughly $3.3 million USD. Laizer says 10% of the earnings will be distributed among his workers. He intends to throw a party as well as build a shopping mall and a school in his hometown with the rest of the earnings. Sounds like a win all around! Learn more about Tanzanite https://bit.ly/2ZgdBYL Photo by FILBERT RWEYEMAMU/AFP via Getty Images See more

09.01.2022 https://m.youtube.com/watch?v=NqvpYvLkZq0&feature=youtu.be

09.01.2022 #gemystique Inclusions can be classified into 3 basic groups. 1. Protogenetic: Solid inclusions that existed prior to the growth and formation of their host cry...stal. These inclusions ceased growing and did not dissolve back into solution and were subsequently captured by the growing host crystal. 2 Syngenetic: Any inclusions that grow or form simultaneously with their host crystal. Syngenetic inclusions can be either solids or fluids trapped in primary or secondary voids during crystallization. 3 Epigenetic: Inclusions which form after the complete growth and formation of the host crystal. ‘Although mineral inclusions can be protogenetic, syngenetic or epigenetic, natural fluid inclusions must always be syngenetic. This is because, by their fluid nature, they must be trapped during growth by the growing crystal in order to be incorporated within that crystal. In a very real sense fluid inclusions trap themselves. In other words, the very same solutions in which the host is growing are also the solutions that become trapped as fluid inclusions. They, so to speak, seal the lids on their own negative crystal coffins.’ (PhotoAtlas Volume 2. Pg-543) The same can observed in this Amethyst which contains an aqueous primary fluid inclusion with a trapped gas bubble that is free to move. Notice the changing position of the bubble in the 3 photographs. The presence of two phases or states of matter (liquid and gas in this case) makes this a ‘Two Phase Inclusion.’ #gemology #gemmology #microscopy #microscopemonday #photomicrography #inclusions #microworld #quartz #amethyst #twophaseinclusions #gemystique #cupoty #gemologist #gemmologist . . Photos: Sheikh Fahad Abbas - Gemystique . . Facebook: Gemystique Instagram: www.instagram.com/gemystique_official Twitter: www.twitter.com/gemystique LinkedIn: www.linkedin.com/company/gemystique-official Microscope: Leica Microsystems

07.01.2022 You can get some insight into how people work in a gem mine by looking at a series of photos taken in a gem mine.

07.01.2022 https://www.facebook.com/1498405426942292/posts/3046033468846139/?extid=yK7TxIOWXyxYesFC

06.01.2022 This article about Maxixe aquamarine from the GIA puts previous Gemology Worldwide discussion about this material to rest.

05.01.2022 https://youtu.be/rMAFSFi1bN4

05.01.2022 https://www.facebook.com/1498405426942292/posts/2853940374722117/?extid=0aHbzwZJOYA0C5wb

04.01.2022 https://m.facebook.com/story.php?story_fbid=4408405199199090&id=100000889609085&sfnsn=mo

04.01.2022 Petra has recovered 5 high quality Blue Diamonds at the Cullinan mine in South Africa over the space of 1 week, ranging from 9 to 25cts is size; Blues are so rare that there are no official statistics, however the Cullinan mine is known as the world's most important source.

04.01.2022 https://m.facebook.com/story.php?story_fbid=3522387721132842&id=111118162259832

03.01.2022 https://www.facebook.com/112512293800957/posts/143508300701356/

02.01.2022 A macro shot I took of one of my favorite Laguna Agates. I use a Nikon d3500 with a Sigma Macro Lens. Added a shot of the Laguna Agate. You can see where the macro shot was taken from. This picture was taken with my regular cannon lens on a macro setting.