Photoluminescence Spectra of Emeralds from Colombia, Afghanistan, and Zambia by Brian Thompson. See Research Below
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Fri Nov 24, 2017 6:10 pm

All times are UTC - 4 hours




Post new topic Reply to topic  [ 64 posts ]  Go to page Previous  1, 2, 3, 4, 5
Author Message
 Post subject: Re: Fossils that are used as Gems
PostPosted: Wed Sep 26, 2012 3:18 pm 
Offline
Moderator
User avatar

Joined: Thu Dec 13, 2007 3:42 pm
Posts: 4078
Location: the Netherlands
some stuff is better filed under 'cabinet piece'...

At least until some cool idea pops up in your head ;)


Top
 Profile  
Reply with quote  
 Post subject: Re: Fossils that are used as Gems
PostPosted: Thu Sep 27, 2012 12:15 am 
Offline
Gemology Online Übergoddess
User avatar

Joined: Mon Oct 06, 2008 6:13 pm
Posts: 4997
Location: Australia
Unless you went for a monster suite I'd probably keep it whole.

_________________
Keep em comin!!!

Most of the fire on the wall has been put out :)


Top
 Profile  
Reply with quote  
 Post subject: Re: Fossils that are used as Gems
PostPosted: Thu Sep 27, 2012 4:55 pm 
Offline
Gold Member
User avatar

Joined: Fri Oct 19, 2007 5:04 pm
Posts: 1567
Location: Walnut Creek, CA
Uhmm... I don't own a cabinet here. :lol:

My best idea so far would be to make a series of round cabochons, exactly of the same size, showing the different colors. Like those cool gemstone suites* showing e.g. the colors in garnets, sphalerites (I saw some pretty ones in person, from gemfrance at the Mineral Show in Lyon last year), etc... The resulting series would be a nice display collection, or a matched series for a neat necklace, I guess. I should ask the females around about this... I'm not really into fashion jewelry. :lol:

But still, it's a nice slab to display as it is (once polished) #-o

*I will do something like that for faceted quartz sooner or later. I need to choose the proper design, and the right size. I think it's about time to start this project.


Top
 Profile  
Reply with quote  
 Post subject: Re: Fossils that are used as Gems
PostPosted: Tue Jan 01, 2013 5:25 pm 
Offline
Moderator
User avatar

Joined: Mon Apr 02, 2012 9:31 pm
Posts: 2603
Location: North Carolina
A little bump here. Our friend who does cabochon cutting for us just came by today, and he brought these with. I thought that they were interesting enough to go here.
Image
These are cross-sections of agatized crinoid stems, something I haven't really seen before. However, we The color, lustre and overall look turned out much better than I had expected, a bit of a lavender hue to it. I think they should make some very beautiful earrings.
Image
This one is a slice of a fossilized pine cone from Patagonia. Nice, very finely banded chalcedony has replaced the seeds and fills small pits throughout the stone. Very neat material.
Image
This is a length-wise split of a crinoid stem, in one of the neatest arrangements of a fossil in matrix I have ever seen. I really liked how the composition worked out in the cabochon as well.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 64 posts ]  Go to page Previous  1, 2, 3, 4, 5

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