HPHT Diamond?

[spiritjim]

Are those diamond interesting to buy?
Do they have any problem?
Are they resell-able?

http://www.hphtdiam.com/content-38

Thanks

 

[yssie]

high pressure high temperature, treatment is stable


https://www.pricescope.com/wiki/diamonds/diamond-treatments-synthetics/
[URL='https://www.pricescope.com/community/threads/what-does-hpht-hpht-mean-in-the-notes-section-of-a-report.119658/']https://www.pricescope.com/community/threads/what-does-hpht-hpht-mean-in-the-notes-section-of-a-report.119658/[/URL]

 

[spiritjim]

What's the price difference between a natural diamond and a HPHT one?

 

[oldminer]

There is not a lot of price difference when you are willing to buy one at retail. If you make a low-ball offer on an HTHP diamond you may well get it while on an untreated diamond a low-ball offer is a waste of time.

If you want to sell an HTHP diamond second hand to a dealer you'll be lucky to find a buyer. Sure, somebody may make a mistake or be willing at a very low price, but it is a large deterrent to getting it sold back to the trade. If you sell it to a consumer, which is never easy, you might come out alright, but don't plan on getting so lucky.

 

[adamasgem]

What's the price difference between a natural diamond and a HPHT one?

That depends on whether you are talking about fancy colors or near colorless, from maybe 2% to 50% of comparable wholesale, depending on the type of rough used and resultant color.

When you can take a $1.5K wholesale rock and turn it into something that would cost $800K, like in the case of the green transmitter (think mountain dew color) I wear, with minimal investment, or buy a HPHT (irradiated) red for 5 to 10K for a carat instead of a million dollars, you get the same flash for little money.

When GE first came out with the product they were hyping the colorless at a premium over natural, didn't work well..

One wonders where all the DeBeer's admitted stockpile of IIa industrial brownies went after they went private.

GE was initially printing money, as were others less forthright who didn't disclose, as for years it was extremely difficult in some cases to determine origin of color in high color stones like D's and E's, and then they (GE) sold the business.
When the price differential between the starting and finished material was 10 times or more, not a bad business, especially for those who didn't disclose treatment.

They also were able to make really nice pinks (removing brownish tinge) and blues (removing grayish/brownish tinge) without irradiation out of a small subset of type II's.

There is always a market, if properly disclosed, but as Dave alluded to, a possible hard re-sell.

But then again, some fancy colors are sold all the time which have been irradiated to get their color (pinks, greens, yellows, teal blues and purples), at fractions of the cost of the natural colored counterpart.

 

[denverappraiser]

Are they resell-able?

http://www.hphtdiam.com/content-38

Thanks

Reselling diamonds is difficult in the best of circumstances. For most people, reselling treated diamonds is even more difficult than untreated natural stones. At the right price you can sell pretty much anything but unless you happen to own a jewelry store in the right sort of marketplace to be selling these things, expect to take a serious haircut when it comes to sales time. Buy what you like, but don't kid yourself that this is a business venture.

Curiously the dealer selling it doesn't list the price. I assume you've got some idea what they're charging but when you shop it, make sure you're shopping against similar HPHT stones, not against untreated natural stones. The difference is important.