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| HOME : FORUM : EDUCATION : DIAMONDS : Australian Argyle Pink Diamonds |
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Post#1 @
01-18-02
, 02:58 AM
Where can I find them... ?? |
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Post#2 @
01-18-02
, 04:38 AM
I will start small with 0.05ct to 0.01ct par-vae ring (40-100 pcs) depending on quality, price and availability. I'll look into the just below 1ct ones later when I know a little more... I am still not sure what I want to specialise in collecting. I do love the pink diamonds, but it is pricey.. might have to start with Champange ones first |
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Post#3 @
01-18-02
, 06:04 AM
Garry, I was just on you web site-nice, lots of good information, good work; I found this info on pink diamonds on your page: "Scientists still do not fully understand the cause of the pink colour. Usually colour is caused by impurities, but Argyle diamonds are very pure." Very rarerly, pink diamonds can be truely called type IIa (nitrogen free, "pure diamonds"). All pink diamonds which we have analysed so far are either type IaA or type IaA/B and contain substancial amounts of nitrogen and usually some hydrogen (see graph). The cause of color is pretty much unclear, I agree, but it is thought to be caused by a combination of nitrogen/hydrogen and plastic deformation of the lattice; hydrogen might be responsible for any violet color modifier; brown diamonds and pinks are clearly related to each other; Thomas H. http://www.gemlab.net
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Post#4 @
01-18-02
, 08:55 AM
Hi Garry, true- most pinks have an FTIR spectrum like the IaA/B (blue trace) and contain a modest amount of aggregated nitrogen; very few stones contain as much nitrogen as the IaA (green trace); just recently we took FTIR data from around 40 pieces of small Argyle pinks and none of them were free of nitrogen and hydrogen, and although mentioned in literature, we could not find a single type IIa pink diamond... I totally agree with you, as soon as Argyle shuts down, the production of natural pinks (and hydrogen-rich "blues") will nearly fall down to zero... All other deposits known thus far do not have such a "moved" geology like Argyle, therefore the stones coming from these deposits rarely gone through severy plastic deformation... And hydrogen rich stones from other deposits are also very rare... so say bye bye to pinks, hydrogen "blues" and chameleons... Thomas H. http://www.gemlab.net |
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where to get a good buy?
Post#5 @
01-18-02
, 11:26 AM
I have become totally awed by pink diamonds. I know the cost per carat is sky high, but where can I get a good buy on a small one. I have looked at 3 or 4 web sites, but wow they are really expensive even for a 20 pointer!! Any ideas? |
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Post#6 @
01-18-02
, 02:05 PM
Hmmmm, to get a good deal on a natural pink, you gotta be lucky... I don't know anybody selling them for little, unless they are pale... We deal in fancy pinks, but they are not cheap... So, I guess it's gonna be hard. Thomas H. http://www.gemlab.net
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maybe it is me but..
Post#7 @
01-18-02
, 04:52 PM
Forget it, I answered my own question with a visit to your site. If it was only a little bigger.... [Edited by Webz on 01-18-02 at 03:54 PM] |
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I wish it was a bit bigger too...
Post#8 @
01-18-02
, 06:19 PM
yep, I wish this pinkish purple diamond was a bit bigger, too... Oh well, just a while ago I got an offer by a dealer... he offered me a GIA certified intense purplish pink oval diamond of 6.16cts/ VS 2.... When I heard the price, I decided to wait with such "objects of insanity"... The non-negotiable asking price was 1'848'000 USD (one million eight hundred thousand USD)... Thats just 300'000 per carat...!!! So-upon request by clients, I can get such stones, but just to invest-Jesus! Thus we just have small stones of these colors on stock... Thomas H. http://www.gemlab.net |
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Post#9 @
01-18-02
, 06:29 PM
Hey Garry, do you have any chameleon diamonds? Are those coming out of Argyle too? Shelby 
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Post#10 @
01-18-02
, 06:37 PM
I have some... they are from Argyle... One is in my collection... love them!Thomas H. http://www.gemlab.net |
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Post#11 @
01-18-02
, 06:56 PM
Oh well, it's not like I could afford one anyway *sigh* Shelby
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Post#12 @
01-18-02
, 07:02 PM
Garry, I guess most colorless IIa's seem to come from that indian source, but as much as I know most of the IIa brownies which are used for HPHT seem to come from Australia... I don't know about pinks, have not seen any IIa pink diamond yet... Thomas H. http://www.gemlab.net |
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Golconda...
Post#13 @
01-18-02
, 07:25 PM
Exceptionally white D diamonds are generally referred to as "Golconda" but I'm sure it is meant as a simple descriptor rather than the point of origin. How could anyone possibly identify a true Golcunda without some sort of original certificates of billing or otherwise. Although rare these whiter than white diamonds are occasionally produced in other locations. I'm putting a ring together with an Intense Purplish-Pink right now. If you remind me in a couple of weeks I'll be happy to show you some pictures. [Edited by Webz on 01-18-02 at 06:26 PM] |
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Post#14 @
01-18-02
, 07:32 PM
NewtEves, your original posts talked about using pink melee for pave...Garry, tell me if I'm wrong, but a ring with a half a dozen or so 0.05 pinkish browns or brownish pinks, not the intense or purplish pinks, would cost alot less than a million bucks? Something to think about at least .
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Post#15 @
01-18-02
, 07:39 PM
Yes, dogbert, you can pick up brownish-pinks quite inexpensively. Even a very nice pink in melee size is affordable. |
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Post#16 @
01-18-02
, 07:50 PM
Oooh...Webz, you've got me thinking about a project I've had on the back burner for a couple of years now...my sister inherited a platinum ring from my grandmother with nine 0.10s arranged in a 'diamond' pattern (imagine that ), sort of like this:Code:
I've always loved her ring, and have thought about doing something similar at some point for my wife. Maybe pinks or brownish pinks would make an interesting variation and not break the bank .
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Post#17 @
01-18-02
, 07:50 PM
True, they call any such stone "Golconda", but indeed many nitrogen free (at least to the detection limit of FTIR's) colorless diamonds (IIa) appear to come from that source. I think it's just a matter of experience, that other sources do not produce nitrogen free colorless diamonds. Oh-by the way... a diamond which contains quite a lot of aggregated nitrogen can be completely colorless... as long as there is not too much of N3 aggregates present. So there is not a linear correlation between amount of nitrogen and color... It depends quite a bit on the aggregation or non-aggregation of the nitrogen. Thomas H. http://www.gemlab.net |
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Post#18 @
01-18-02
, 07:55 PM
So do folks get GIA or HRD reports on melee like this, or is the price reasonable enough that there typically isn't a report? I guess running these on something like Marty's SAS2000 would help confirm natural origin, and possibly color? |
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Post#19 @
01-18-02
, 08:28 PM
EEEEK!! Thanks dogbert..... I was looking at pink melee for pave in the range of pinkish browns or brownish pink's prices and thought that hey.. they are "quite" affordable, but might as well do it right the first time and get a "decent-er" Purple pink... but a million bucks!!!! I could feed a lot of people with that!! Duh... what a wake up call.. so.. where can I find Pinkish Brown melee for pave?? 10Q |
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how many carats?
Post#20 @
01-18-02
, 08:42 PM
And what sizes? |
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Post#21 @
01-19-02
, 12:45 AM
I will start small with 0.05ct to 0.01ct pink melee for a pave ring (40-100 pcs) depending on quality, price and availability. I'll look into the just below 1ct ones later when I know a little more... I am still not sure what I want to specialise in collecting. I do love the pink diamonds, but it is pricey.. might have to start with Champange ones first Probably will have to shelve the pink Argyle project until later. Will have to settle with pink-browns or even pink yellows. which is better and where can I get them?? |
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Post#22 @
01-19-02
, 03:00 AM
Pink champagnes are going to be much easier to find that pink yellows. I personally really like the pink champagnes. It's unlikely that you'll be able to buy them yourself, however. Little stones of that size are just not profitable to sell individually, so suppliers like to sell them by the lot. You'll have to go through a jeweler you trust, or you could go through Garry or Webz. At that size, weight becomes far less important than mm diameter. A 0.10 carat is about 3.0 mms, so for a pave ring you'll want 3.0 mms which may range a couple digits in carat weight. Really, for this kind of thing, I'd just trust the jeweler to pick out the best and go for it. Good luck Shelby |
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GARRY PLEASE
Post#23 @
01-19-02
, 05:32 AM
Garry, sorry for out of topic, but I read in the press in singapore that a Australian diamond company ( AURIUS,I think) will be working with TIANPO jewellery(s'pore) to distribute australian diamond in s'pore, could you shed some light on this australian company? thanks. |
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THANKYOU
Post#24 @
01-19-02
, 09:24 AM
Thanks Gary,I sincerely hope this company will give a run for debeers,you're most knowledgable,thanks again. |
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Thanks Shelby.. Practical advice. THAT explains why my batch of 0.02 ct stones came in various sizes......
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