Copper Bearing Tourmalines

[Meher Thakker]

Well I had a question for those who have knowledge of copper bearing tourmalines that are from India. I bought a few roughs and got the copper bearing tests done..and copper shows up in good %...I got a few roughs cut/polished..below are the pics

I am just wondering of the how well are these gems priced ?

In the image the sizes are from 3 cts to 28 cts size of tourmalines...total of 225cts on the image

Meher

 

[Meher Thakker]

here is the pic..

 

[Pandora II]

I wouldn''t think they would be worth a great deal - brown is not a sought after colour in gemstones...

 

[Meher Thakker]

thx for your feedback ..I have attached some other shades too...are these better ?

Meher

 

[chrono]

My opinion that they are worth very little is unchanged. For a cuprian to be worth a lot, it must not only contain a high amount of copper, but also glow as if it has its own internal battery source. See the picture below.

 

[chrono]

Original vendor''s picture of the above Mozambique cuprian.

 

[Barrett]

hey that looks like some of my ampa tourmalines from orissa india..are you sure it's copper and not chromium? When viewed under chelsea all mine either showed a pink or a strong red.

 

[Meher Thakker]

maybe the blues are worth higher as I read..
btw..there''s alot of tricks to be used in photography for me I guess

I just took the pics under a normal inhouse tube light. Will try and take some pics in the sun tomorrow..maybe they would look a bit different..

thx alot for your help though..PS has really proved useful to me

Meher

 

[Meher Thakker]

amguy : there are chrome and copper both ..the green ones in the second pics have chrome..but the sunset kind have very good copper..I got my roughs metal tested..and quite a bit of copper in there.

Meher

 

[arjunajane]

My personal, un - pro opinion: I don''t really care how much metals are in the stones; if they''re not an attractive colour, they are not worth buying, hence there value is...?

 

[Meher Thakker]

arjunajane ..that was a perfect reply..I understood it well

btw ..I already have bought the roughs..now getting them cut..so does''nt matter much now to me..mainly I was attracted to the big sized roughs of 50cts size average..the 2 large peices were around 130cts each..hence I shall collect it ..

Meher

 

[Barrett]

It doesn''t matter if it has copper in it or not..heck it could have gold, platinum, and silver all in them but if it doesn''t act as a color or a color enhancer then it will not mean squat on the price..it''s a cool side note..copper, chromium, etc. but vas far as price it doesn''t do anything to it unless it acts on the color of the stone to certain degrees

 

[chrono]

Date: 8/31/2009 10:04:20 AM
Author: Meher Thakker
maybe the blues are worth higher as I read..
btw..there's alot of tricks to be used in photography for me I guess

I just took the pics under a normal inhouse tube light. Will try and take some pics in the sun tomorrow..maybe they would look a bit different..

thx alot for your help though..PS has really proved useful to me

Meher

Blue are indeed worth more but if the blue doesn’t glow, it is also valued less and CANNOT be called a Paraiba tourmaline. I don’t know how to photoshop so my picture (the one taken sitting on the lid of the case) is untouched. I also used a cheap point and shoot camera as I don’t know any photography tricks. Many also pay for the looks of the individual gem, not the name or origin or contents of whatever metal.

 

[Barrett]

did you get the rough from abdul nasar in india? I swear your stones look identical to mine..they are dravites some have green, some brown, some a reddish orange color they are quite cool stones..

 

[PrecisionGem]

Nice looking stone Chrono!!!

 

[chrono]

Date: 8/31/2009 11:39:15 AM
Author: PrecisionGem
Nice looking stone Chrono!!!

Thanks Gene, but you already knew that.

 

[Fly Girl]

Date: 8/31/2009 12:04:36 PM
Author: Chrono

Date: 8/31/2009 11:39:15 AM
Author: PrecisionGem
Nice looking stone Chrono!!!

Thanks Gene, but you already knew that.

As my folks used to say, you guys are members of the Mutual Admiration Society.

 

[T L]

Dravite (brown tourmaline) is the least expensive tourmaline besides black tourmaline, so regardless of whether it has copper or not, it''s not worth much per carat.

 

[D&T]

Date: 9/1/2009 4:25:49 PM
Author: tourmaline_lover
Dravite (brown tourmaline) is the least expensive tourmaline besides black tourmaline, so regardless of whether it has copper or not, it''s not worth much per carat.

TL your BACK!!!!

how have you been? we''ve missed you!

 

[packrat]

Date: 9/1/2009 4:34:22 PM
Author: D&T

Date: 9/1/2009 4:25:49 PM

Author: tourmaline_lover

Dravite (brown tourmaline) is the least expensive tourmaline besides black tourmaline, so regardless of whether it has copper or not, it''s not worth much per carat.

TL your BACK!!!!

how have you been? we''ve missed you!

Yay! Nice to see you again!

 

[zeolite]

Date: 9/1/2009 4:25:49 PM
Author: tourmaline_lover
Dravite (brown tourmaline) is the least expensive tourmaline besides black tourmaline, so regardless of whether it has copper or not, it''s not worth much per carat.

We missed you! Welcome back!

 

[T L]

Thanks!!

 

[Barrett]

TL!!!!!!!!!!!

 

[Barrett]

oh but TL i must respectfully disagree about your "dravite" is the least expensive besides black..chrome tourmaline is dravite tourmaline colored by chrome and we all know chrome tourm. is somewhat expensive...but i know what you mean and i am just getting technical..LOL

glad you are back

 

[T L]

Date: 9/1/2009 7:57:22 PM
Author: amethystguy
oh but TL i must respectfully disagree about your ''dravite'' is the least expensive besides black..chrome tourmaline is dravite tourmaline colored by chrome and we all know chrome tourm. is somewhat expensive...but i know what you mean and i am just getting technical..LOL

glad you are back

Hi Amguy,
Admittedly, I didn''t know that dravite could also be colored by chrome. I thought it was strictly brown tourmaline. Thanks for the kind words.

 

[Barrett]

well brucetourm taught me that the green chrome ourmaline you all buy and see is actually dravite colored by chromium to make it green..i figured it was elbaite but he told me it was dravite(species)..never really thought about it before

 

[klewis]

Date: 9/1/2009 7:57:22 PM
Author: amethystguy
oh but TL i must respectfully disagree about your ''dravite'' is the least expensive besides black..chrome tourmaline is dravite tourmaline colored by chrome and we all know chrome tourm. is somewhat expensive...but i know what you mean and i am just getting technical..LOL

glad you are back

Amethystguy - Is chrome and chromium actually the same thing. I thought chrome was metal plate and chromium an element. I hope this doesn''t sound picky, it''s just that I''ve seen the two terms used quite often and wonder if the term is interchangable, or refers to two different things.

 

[Barrett]

chrome is chromium..or chrome plating on a car or something is the process of surfacing with chromium..it''s just the sortening of the word chromium..so chrome rims on cars can or should be called chromium rims..just a shortened version..hope this helps
jason

 

[klewis]

Date: 9/2/2009 8:24:47 AM
Author: amethystguy
chrome is chromium..or chrome plating on a car or something is the process of surfacing with chromium..it''s just the sortening of the word chromium..so chrome rims on cars can or should be called chromium rims..just a shortened version..hope this helps

jason

Ahhhh. Thanks.