ALMOST THERE!. Help us with a final push needed to keep mindat.org running. Click here to help.
Catawiki are hosting a mindat.org benefit auction. All proceeds to mindat.org! BID NOW
登录注册
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat Articles
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
搜索:
矿物名称:
地区产地名称:
关键字:
 
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计The Elements会员列表书籍及杂志Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo Galleries今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集

Live Report - Gem-A Conference London

Last Updated: 4th Dec 2018

By Jolyon & Katya Ralph

This is a LIVE report, keep this page loaded for live updates - new images will appear as they are added.



Today I’m at the Gem-A conference in London, and I’d like to thank Gem-A and specifically Alan Hart for making this possible.

I know Tom is doing a rival live report from Belgium today so hopefully your attention won’t be too distracted by two reports at once.



Meeting up with good friends- left to right: Alan Hart of Gem-A, Robin Hansen and Mike Rumsey from the Natural History Museum London.



Alan Hart opening the conference



First speaker is Adonis Pouroulis, chairman of Petra Diamonds talking about how diamonds can unleash opportunities for sustainable development.



Guess the material!



Angharad and Sam from Gem-A products table!



Getting ready for second presentation.



John Benjamin (who appears as an expert on UK TV’s Antiques Roadshow) starting his talk on “a window into a forgotten world: the progress of the Georgian jewel.”



Antique paste (glass) jewellery from around 1740-50



Green paste emerald stimulants from end of the 18th century- the rise of paste jewellery was directly related to the rise of robberies on noblemen - by highwaymen!



Klemens Link from the Gübelin Gem Lab now talking about principals of origin determination in gemstones.



Emerald analysis shows significant groupings based on origin type and therefore origin locality.



Using laser ICP mass spectrometry for age identification of gemstones



Using zircon inclusions to determine the age of a pink sapphire.



Ages of emeralds plotted on some kind of snail.



Nice view out of the venue window! (County Hall)



Evan Caplin is now talking about the Magic of Alexandrite.



Tanzanian cats eye alexandrite.



Evan Caplan with his huge Brazilian Alexandrite twin.



Closeup!



Reena Ahluwalia - diamond storytelling through design and art.



Just walking over the bridge to the Gem-A conference day 2



Dr John Rakovan is now talking about an introduction to Gem crystal growth.



Yes, I brought a better camera today.



Spiral growth simulation



Totally different angle now, with Bernhardt Berger of Cartier talking about their extraordinary and unique heritage.



A Cartier ‘mystery clock’ - the mystery being how the hands turn as there is no visible mechanism. In this case there are two rock crystal discs behind the faceted face that turn independently



Dr Ulrika D’haenens-Johansson from the GIA talking about laboratory grown Diamonds and their identification.



The “evolution” of man made diamonds.



How a CVD diamond comes out of the machine, with graphite crust.



A reminder of how diamond types are defined.





Article has been viewed at least 2762 times.

Comments

In order to leave comments to this article, you must be registered
矿物 and/or 产地  
版权所有© mindat.org1993年至2018年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 Current server date and time: 2018.12.15 20:24:48
View slideshow - Go to top of page