August 24:—SAN ANTONIO, TEXAS: Retail show; Southwest Gem and Mineral Society of San Antonio; Sat. 10-5
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Thu Aug 22, 2019 7:56 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 17 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: Lab HPHT diamond
PostPosted: Sun Aug 11, 2019 3:32 pm 
Offline
Valued Contributor

Joined: Fri Jun 25, 2010 12:04 am
Posts: 143
Location: Idaho
Moissanite ID is very straight forward - a 10x loupe or better magnification. It is strongly double-refractive.

Used to be it was oriented on the table, so it was easily seen. Now it is frequently thru one of the crown main facets (in C&C stuff).

I remember the supposed story from when moissanite first came out - at a major show an expert was asked by a jewelry publication to write an article on separating diamond from moissanite. Expecting a reasonable time for the research and writing of a scholarly article, they were surprised to be handed a thin folder a short time later. Inside was a sentence - "Get a loupe!!!" Separation is no big deal, and involves no pricey tools.

My memory isn't the best, so if you know the real story, or you are "that person", please give us the first-hand facts!

_________________
Lapidarist by Love
Goldsmith by Necessity

Facetron
GemCad/GemRay
Matrix 8/Rhino 5
REVO A
EnvisionTEC Micro
Indutherm MC-15


Top
 Profile  
Reply with quote  
 Post subject: Re: Lab HPHT diamond
PostPosted: Sun Aug 11, 2019 10:01 pm 
Offline
Valued Contributor

Joined: Mon Oct 17, 2005 11:10 am
Posts: 295
Location: Illinois
My recollection of that story is that the quote was "it's doubly refractive".

_________________
I love the smell of Methylene Iodide in the morning...


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 17 posts ]  Go to page Previous  1, 2

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Gemology Style ported to phpBB3 by Christian Bullock