Mindat.org Conference 2014 Madagascar 28 May 2014 - 13 June 2014
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Wed Apr 16, 2014 12:11 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 9 posts ] 
Author Message
 Post subject: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 1:01 pm 
Offline
Valued Contributor
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 442
Location: PAKISTAN-Peshawar
Hi folks
To day I want to share the pictures of surface diffused synthetic star ruby. This is bought in Hong Kong in the name of natural star ruby.

With best regards

HUK


Attachments:
DSCN0736.JPG
DSCN0736.JPG [ 24.32 KiB | Viewed 1180 times ]
DSCN0737.JPG
DSCN0737.JPG [ 34.19 KiB | Viewed 1180 times ]
DSCN0739.JPG
DSCN0739.JPG [ 18.28 KiB | Viewed 1180 times ]

_________________
Gemology for everyone.
Hamid Usman Khattak (HUK)
Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 1:03 pm 
Offline
Valued Contributor
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 442
Location: PAKISTAN-Peshawar
some more pictures


Attachments:
3.JPG
3.JPG [ 83.72 KiB | Viewed 1179 times ]
4.JPG
4.JPG [ 34.13 KiB | Viewed 1179 times ]
5.JPG
5.JPG [ 32.19 KiB | Viewed 1179 times ]

_________________
Gemology for everyone.
Hamid Usman Khattak (HUK)
Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 4:32 pm 
Offline
Site Admin
User avatar

Joined: Fri Apr 17, 2009 3:53 pm
Posts: 1919
Location: Sweden
Nice images Osman. I do not understand who would buy this as natural... the star gives away its nature immediately even in an image. Big flashing warning sign :)

_________________
_____________
Conny Forsberg


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 8:09 pm 
Offline
Valued Contributor

Joined: Fri Sep 08, 2006 8:20 pm
Posts: 354
Location: Texas
So this is natural ruby with a diffused star? Synthetic? Glass filled? Why is the star so fake looking? Looks pretty good to me...


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Mon Sep 12, 2011 9:09 pm 
Offline
Platinum Member
User avatar

Joined: Fri Feb 24, 2006 1:20 am
Posts: 2557
Location: Southern California, U.S.A.
I've cut and seen quite a few star corundums. I've examined diffused natural sapphires and can readily sight-ID them. But I don't see any such obvious clues with this stone. Will someone explain what makes diffusion so apparent in this ruby?

_________________
Rick Martin

www.artcutgems.com


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 4:34 am 
Offline
Site Admin
User avatar

Joined: Fri Apr 17, 2009 3:53 pm
Posts: 1919
Location: Sweden
The star seems to be floating on top of the stone which is a warning sign for me. Should be even easier to see live.

_________________
_____________
Conny Forsberg


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 8:31 am 
Offline
Valued Contributor
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 442
Location: PAKISTAN-Peshawar
Dear Conny Forsberg and friends,
Actually this is Flame Fusion synthetic Ruby which is further heated with Cr+Ti (Fe+Ti in case of blue sapphire) to between 1300 degree to 1900 degree centigrade in a oxidizing atmosphere and then cool slowly approx 1-14 days or more. This will allow the formation of stars with abundant titanium.

This ruby is bought in Hong Kong one of our customer in the name of natural star ruby and the dealer tell him that this star ruby origin is Pakistan. But after thoroughly checking in Gems & Gemological Institute of Pakistan (GGIP)-Peshawar laboratory the stone found Surface diffuse synthetic flame fusion star ruby.

For more pictures please visit the following link

http://aggemologist.blogspot.com/2011/0 ... -ruby.html

I will also post more pictures soon

with best regards

HUK

_________________
Gemology for everyone.
Hamid Usman Khattak (HUK)


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Tue Sep 13, 2011 11:25 am 
Offline
Platinum Member
User avatar

Joined: Fri Feb 24, 2006 1:20 am
Posts: 2557
Location: Southern California, U.S.A.
Conny Forsberg wrote:
The star seems to be floating on top of the stone which is a warning sign for me. Should be even easier to see live.

That's what I look for in diffused natural sapphire but your eyes must be sharper than mine -- the surface effect is not that obvious to me from these images.
Neither is the asterism as perfect as that normally seen in diffused flame fusion corundum which is one of its obvious visual clues. I think the low dome cut broadens the star's "legs" and gives it a more natural appearance. It's good to have a reference visual. Thanks!

_________________
Rick Martin

www.artcutgems.com


Share on FacebookShare on Twitter
Top
 Profile  
 
 Post subject: Re: Surface diffused Synthetic Star Ruby
PostPosted: Sun Nov 20, 2011 5:06 pm 
Offline
Valued Contributor
User avatar

Joined: Wed Dec 30, 2009 11:44 am
Posts: 442
Location: PAKISTAN-Peshawar
some more Pictures of surface diffused synthetic star rubies


Attachments:
synthetic diffused star ruby.JPG
synthetic diffused star ruby.JPG [ 121.42 KiB | Viewed 969 times ]
synthetic diffused star ruby-1.JPG
synthetic diffused star ruby-1.JPG [ 159.52 KiB | Viewed 969 times ]

_________________
Gemology for everyone.
Hamid Usman Khattak (HUK)
Share on FacebookShare on Twitter
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 9 posts ] 

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 2 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