February 2-4—TUCSON, ARIZONA: Show and sale; United States Faceters Guild; Old Pueblo Lapidary Club, Thu. 10-5, Fri. 10-5, Sat. 10-9; A great event to learn Faceting, or hone your skills, presentations on dopping, heating, using software, stone evaluation, machine demonstration, door prizes, stone competition, and the Faceters Hob Nob to finish it off Saturday night
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Mon Jan 30, 2023 12:21 am

All times are UTC - 4 hours

Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: SF Gem and Mineral Society: Virtual Turquoise Lecture
PostPosted: Thu Oct 14, 2021 3:56 pm 
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 21410
Location: San Francisco
Turquoise has been historically used as jewelry and as a decorative stone in many places around the world. From Egypt to the Mesomericas, and most famously Persia, turquoise has held significance in our culture throughout history. American turquoise, found in the Southwest of the US, is no exception, and is one of the most famous localities for turquoise. Turquoise is found near copper deposits, usually forming intertwined in matrix. However, in some rare circumstances, turquoise sometimes can be found crystallized in very small sharp crystals or formed botriyoidally.

Click on the link below to watch.
https://drive.google.com/file/d/1kIeoK5 ... CqWk4/view

Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

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