American Society of Appraisers - Education Update: Identifying Synthetic Diamonds CLICK
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Mon Jun 25, 2018 8:10 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 22 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 2:36 am 
Offline
Established Member

Joined: Sun Jan 11, 2015 11:13 pm
Posts: 36
Barbra Voltaire wrote:
Musse4936, you're posting objects that one would find in most all the tourist shops in a Chinatown. Trinkets a tourist might bring home as a souvenir from their vacation. Usually costing only a few dollars and often misrepresented....

If that is the market you are in, I'm sure there are many other shops in the Philippines with similar wares. Do your homework. Research what others are selling and how it is being represented and the prices it is being sold for and how negotiable those prices are.

That's YOUR job, not ours.


l have never seen a vase like this in manila, the vase comes from japan. l know the women who import it...


Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 2:42 am 
Offline
Established Member

Joined: Sun Jan 11, 2015 11:13 pm
Posts: 36
roshanravan wrote:
to get marble rule out drop a little hydroelectric acid (use Gloves and Goggles and take safety measures) if you see chemical reaction ( you will see bubbles)
marble is composed of calcite (metamorphic) so it reacts with cold, dilute, hydroelectric acid.


Thanks for your help, here are pic. of the test l just did.... and some more close up pictures, hope this help... the bobles where there for a while 5 min. then clear like water...
l used Hydrochloric acid...for the test.


Attachments:
DSC04353.JPG
DSC04353.JPG [ 58.64 KiB | Viewed 1247 times ]
DSC04354.JPG
DSC04354.JPG [ 47.8 KiB | Viewed 1247 times ]
DSC04359.JPG
DSC04359.JPG [ 43.18 KiB | Viewed 1247 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 2:55 am 
Offline
Established Member

Joined: Sun Jan 11, 2015 11:13 pm
Posts: 36
musse4936 wrote:
roshanravan wrote:
to get marble rule out drop a little hydroelectric acid (use Gloves and Goggles and take safety measures) if you see chemical reaction ( you will see bubbles)
marble is composed of calcite (metamorphic) so it reacts with cold, dilute, hydroelectric acid.


Thanks for your help, here are pic. of the test l just did.... and some more close up pictures, hope this help... the bobles where there for a while 5 min. then clear like water...
l used Hydrochloric acid...for the test.


After the test there is a spot like a coating has gone from the vase, look pic.


Attachments:
DSC04360.JPG
DSC04360.JPG [ 45.87 KiB | Viewed 1246 times ]
Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 3:39 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 18783
Location: San Francisco
It is aragonite, which some call marble onyx. It is relatively soft and easily carvable. Availabvle in Gift Shops all over the world.

Data:
Cleavage: {010} Distinct
Color: Colorless, White, Gray, Yellowish white, Reddish white.
Density: 2.93
Diaphaneity: Transparent to translucent
Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Habit: Fibrous - Crystals made up of fibers.
Hardness: 3.5-4 - Copper Penny-Fluorite
Luminescence: Fluorescent and phosphorescent, Short UV=green,yellow white, Long UV=green, yellow pink.
Luster: Vitreous (Glassy)
Streak: white

So, in the future, how would you go about positively identifying this material and separating it from jade or quartz, musse?


Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 4:16 pm 
Offline
Moderator
User avatar

Joined: Mon Apr 02, 2012 9:31 pm
Posts: 2831
Location: North Carolina
(Note that she means travertine rather than aragonite).


Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Sun Jan 18, 2015 4:25 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 18783
Location: San Francisco
YES, Banded aragonite can be referred to as travertine.
Or banded aragonite, you smartie pants! :wink:


Top
 Profile  
Reply with quote  
 Post subject: Re: Jade vase
PostPosted: Tue Jan 20, 2015 5:05 am 
Offline
Gemology Online Veteran
User avatar

Joined: Thu Feb 22, 2007 10:23 am
Posts: 831
Location: GemClub
musse4936 wrote:
Thanks for your help, here are pic. of the test l just did.... and some more close up pictures, hope this help... the bobles where there for a while 5 min. then clear like water...
l used Hydrochloric acid...for the test.

i am glad that you performed the test and specially used safety measures with Acid, washing with Water was great idea for Neutralizing the acid.

now you know what you have and you learned a very effective way to separate marble onyx from Jade or quartz rocks

musse4936 wrote:
After the test there is a spot like a coating has gone from the vase, look pic.

a simple soft polish would make it disappear 8)

Barbra Voltaire wrote:
YES, Banded aragonite can be referred to as travertine.
Or banded aragonite, you smartie pants! :wink:

True & True, both Barbras are right and smart, as you said people are more familiar with marble onyx.

_________________
Farshid Roshanravan ( Roman )
http://diamondclub.us
http://gemclub.co
Blog: http://roshanravan.tumblr.com/


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 22 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