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collectors update

 
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David Epstein
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Joined: 09 Nov 2005
Posts: 29
Location: Teofilo Otoni, Brazil

PostPosted: Fri Nov 11, 2005 9:55 am    Post subject: collectors update Reply with quote

An update from Teofilo Otoni. early in the year we saw what is being called " Paraiba Quartz" I have nor had, nor sold any. It had mushroom clould shaped copper based inclusions and was interesting. Also saw a 13 facetied crysoberyl this week. If you people like I can give posts.
David Epstein
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Gem Writer, book author (The Gem Merchant- How to be one-how to deal with one), Gem Sculptor, Consultant for gem buying and marketing - located in Brazil's gem trading center_Teofilo Otoni.
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africanuck
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Joined: 16 Oct 2005
Posts: 2239
Location: London, England

PostPosted: Fri Nov 11, 2005 10:07 am    Post subject: Reply with quote

Pictures, links and/or info? Yes please!
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Martin
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Joined: 19 Oct 2005
Posts: 137

PostPosted: Sun Nov 13, 2005 10:45 pm    Post subject: Reply with quote

A local dealer here in SA has a treated quartz that has a Paraiba like colour, and was marketed as Paraiba quartz. They are actually selling the terminated crystals themselves, rather than faceted stones. I enquired regarding the crystal, and he said they were treated to produce the striking Paraiba colour in the crystal. He said he thought they had been treated with titanium but didn’t seem too sure. They did not look real at all.

He also mentioned that a natural quartz coming from Paraiba has Gilalite inclusions that produces a blue look quartz from the copper content in Gilalite. He said that the specimen he saw was included and not very pretty really, but definitely bluish.
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Morning Dove
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Joined: 17 Oct 2005
Posts: 3494
Location: White Bear Lake, MN

PostPosted: Mon Nov 14, 2005 12:18 pm    Post subject: Reply with quote

Hey, David--I have your book; quite interesting Smile .
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Gemça
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Joined: 17 Oct 2005
Posts: 224
Location: France | French Riviera

PostPosted: Tue Nov 15, 2005 7:48 am    Post subject: Reply with quote

Martin wrote:
.. natural quartz coming from Paraiba has Gilalite inclusions that produces a blue look quartz from the copper content in Gilalite. He said that the specimen he saw was included and not very pretty really, but definitely bluish.


Yes Martin, your are right.

In the last issue of G&G their talk about blue medusa like inclusions in a quartz from Paraiba (Brasil) formed by Gilalite.
In this quartz there is an other type of inclusion "accicuclar / fibroradiated" blue inclusions that are probably Gilalite (but may be Apachite, Shutakite, Planchéite... accicular copper mineral in fact...No raman have been done on this type of inclusion).

I found this type of quartz one year ago.
Here some photos of the "accicular" type of Gilalite inclusions:
Cabochon:

Gilalite probably (or Planchéite, Apachite, etc..):



I have saw one batch of quartz with the "Gilalite medusa like" inclusion in the "06/2005 Sainte Marie aux Mines" mineral show.. a friend bought one... I have to do photo to show you the "medusa like" inclusion of Gilalite. Smile
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Jean-Marie Arlabosse
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beadiste
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Joined: 17 Oct 2005
Posts: 178

PostPosted: Tue Nov 15, 2005 3:51 pm    Post subject: Gilalite in quartz Reply with quote

The November issue of good ol' Lapidary Journal has a great article by John Koivula and John White about the Brazilian quartz with gilalite.

Best regards,
Chris
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Martin
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Joined: 19 Oct 2005
Posts: 137

PostPosted: Tue Nov 15, 2005 6:16 pm    Post subject: Reply with quote

Gemça,

Thanks for the excellent photos and information - they look quite beautiful actually, and great shot of the inclusions...
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Gemça
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Joined: 17 Oct 2005
Posts: 224
Location: France | French Riviera

PostPosted: Wed Nov 16, 2005 4:43 am    Post subject: Reply with quote

thks Martin,

I have done other photo (as promise) yesterday night of the other forms of Gilalite inclusion.
In fact they are much "mushroom like" ( as david say) than medusa.

They can be Blue or Green:


They grow allong a plan (surface) (Plan P: sur=on sous=under)
...
..like fluorite inclusion in madagasacn quartz


On the grown plan there are some "granulates / seeds".


Some Gilalite tufts have a "tail" (that can look like medusa as described in G&G)



Some tufts are empty with liquid / bubble in replacement


In majority case gilalite tufts look like "emispherical / half sphere" tufts with a flat face allong the plan of growing.


This is (to my sense) a beautiful inclusion that give another posibility of "blue quartz".

Note: I am interested to found quartz with blue papagoïte and/or quartz with bleu indicolite.
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Jean-Marie Arlabosse
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Ux4
Gemology Online Veteran


Joined: 16 Oct 2005
Posts: 935

PostPosted: Thu Nov 17, 2005 4:43 pm    Post subject: Reply with quote

Beautiful specimines, gemca! Exellent photos. Something that I can look for at Tucson.
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John M. Huff
CenSat Enterprises
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africanuck
Platinum Member


Joined: 16 Oct 2005
Posts: 2239
Location: London, England

PostPosted: Fri Nov 18, 2005 2:58 am    Post subject: Reply with quote

It's always such a pleasure to see your photos Gemca. And you're right, those do look more like a mushroom than a jellyfish.
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Pyramid Imports
New to the Forum or The Quiet Type


Joined: 10 Jan 2006
Posts: 11
Location: Minas Gerais, Brazil

PostPosted: Tue Jan 10, 2006 8:29 pm    Post subject: Reply with quote

Hello, For anyone interested I will have a nice collection of this material cabbed and faceted at the Tucson show. I will be at Pueblo Gem Show, Court Pavilion#32. If you cant make it to the show you can email me. Best regards,
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ilarita
New to the Forum or The Quiet Type


Joined: 20 Mar 2006
Posts: 26
Location: USA

PostPosted: Mon Mar 20, 2006 6:00 pm    Post subject: Reply with quote

Thanks to this stone, I found you all.

I was doing a search on the "new medusa quartz" that I saw on a jewelry (yes, I spell it wrong since I'm from the US, lol!) site. I love included quartz so immediately had to know all there is to learn about this!

Here is what I was looking at to begin with.....

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