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Gemmological trivia https://www.gemologyonline.com/Forum/phpBB2/viewtopic.php?f=19&t=4098 |
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Author: | George Sharen [ Tue Oct 30, 2007 1:50 am ] |
Post subject: | Gemmological trivia |
Just a short 3 questions: just for fun 1 Robert Shiply founded the GIA When and where did he receive his training? 2 Robert Shiply JR. helped develope 4 gemmological instruments What were they? 3 IN 1935 the first man made diamond simulant appeared and was said to fool 99% of the experts. What was it and where was it made? |
Author: | Doos [ Tue Oct 30, 2007 7:03 am ] |
Post subject: | |
1. Probably in England at Gem-A. 2. -Shipley universal immersion stage -Rutland polariscope -diamond colorimeter -refractometer -gem microscope 3. Synthetic spinel (Verneuil) from the USA (Jourado diamond), the scare started in Englend. |
Author: | George Sharen [ Tue Oct 30, 2007 10:19 am ] |
Post subject: | |
HI doos: 1: yup shiply was the first graduate of the British Gemmological Assosiation in 1929. 2: right 3: yes Synthetic spinel (Verneuil) is the right synthetic but my notes show that it was made in Germany in 1935. |
Author: | Doos [ Tue Oct 30, 2007 11:36 am ] |
Post subject: | |
Quote: but my notes show that it was made in Germany in 1935
Hi, I'm sure it is a more reliable source than mine as I was basically guessing. |
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