January 24 Through February 4—TUCSON, ARIZONA: Annual show
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Thu Mar 28, 2024 11:21 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 6 posts ] 
Author Message
 Post subject: Identification
PostPosted: Sat Jun 27, 2020 7:00 pm 
Offline
New to the Forum or The Quiet Type

Joined: Sat Jun 27, 2020 6:26 pm
Posts: 2
I use to be pretty good at identifying crystals/gen stones, but I have some I cannot identify. They seem to appear like several different one in the book I have. Could someone help me with them?
Sorry for so many images but my knowledge is not as tuned as it use to be.


Attachments:
20200627_183857.jpg
20200627_183857.jpg [ 1.62 MiB | Viewed 2054 times ]
20200627_183901.jpg
20200627_183901.jpg [ 1.75 MiB | Viewed 2054 times ]
20200627_183930.jpg
20200627_183930.jpg [ 1.63 MiB | Viewed 2054 times ]
20200627_183932.jpg
20200627_183932.jpg [ 1.79 MiB | Viewed 2054 times ]
20200627_183944.jpg
20200627_183944.jpg [ 1.6 MiB | Viewed 2054 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Identification
PostPosted: Sat Jun 27, 2020 11:17 pm 
Offline
Gold Member

Joined: Thu May 12, 2016 2:18 am
Posts: 1542
Those are not crystals. They are tumbled stones with none of the crystal faces left if they ever even had any.

If you think you were good at identify stones like these by their crystal shapes you have been kidding yourself.


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification
PostPosted: Sun Jun 28, 2020 12:22 am 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 21602
Location: San Francisco
Crystals, nope.
Tumble polished stones, yes.

Perhaps this will help:
Visual observation...
https://rocktumbler.com/polished-stones/
and


If you still have unknowns, go pro...
http://www.minsocam.org/msa/collectors_ ... _keyi1.htm


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification
PostPosted: Sun Jun 28, 2020 8:15 pm 
Offline
New to the Forum or The Quiet Type

Joined: Sat Jun 27, 2020 6:26 pm
Posts: 2
Yes, I know this. But they are tumbled versions of their forms. I just thought someone here would know what they are. I have a number of books but find either no matches or multiple possible ones.


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification
PostPosted: Sun Jun 28, 2020 11:22 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 21602
Location: San Francisco
Looks like you may have to Go Pro and do some actual testing on the unknowns.
Tumbled stones did not typically start as crystals. Often tumbled stones are massive. Agates, jaspers, chalcedony do not form xls.

This one is a banded agate (most probably dyed):
Image

You might consider bringing them to your closest gem and mineral club once we can leave the house again.


Top
 Profile  
Reply with quote  
 Post subject: Re: Identification
PostPosted: Tue Jun 30, 2020 8:31 pm 
Offline
Gold Member

Joined: Mon May 26, 2014 9:42 pm
Posts: 1033
Yeah, in the hand I could probably id most of them. Those photos make it hard. There is a jasper, though. :-D


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 15 guests


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