American Society of Appraisers - Education Update: Identifying Synthetic Diamonds CLICK
Welcome to the GemologyOnline.com Forum
A non-profit Forum for the exchange of gemological ideas
It is currently Sun Jun 24, 2018 5:22 am

All times are UTC - 4 hours




Post new topic Reply to topic  [ 51 posts ]  Go to page Previous  1, 2, 3, 4
Author Message
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Wed Jun 13, 2018 9:03 am 
Offline
Valued Contributor

Joined: Thu May 12, 2016 2:18 am
Posts: 173
I think De Beers position, is that Lab grown diamonds are here to stay and will be a big business, so we want to control the conversation, and the perception, thereby controlling relative value. They need to do this while not running afoul of the legal system.


Last edited by 1bwana1 on Wed Jun 13, 2018 7:56 pm, edited 1 time in total.

Top
 Profile  
Reply with quote  
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Wed Jun 13, 2018 10:57 am 
Offline
Gemology Online Veteran

Joined: Wed Jan 23, 2013 5:29 pm
Posts: 860
Location: Paris
They may be mistaken, in case other actors would choose to sell the same lab products at much lower prices, when big quantities will be available in a while.


Top
 Profile  
Reply with quote  
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Wed Jun 13, 2018 11:50 am 
Offline
Valued Contributor

Joined: Thu May 12, 2016 2:18 am
Posts: 173
Isi wrote:
They may be mistaken, in case other actors would choose to sell the same lab products at much lower prices, when big quantities will be available in a while.


I think you may be missing the point of why De Beers in entering this market. The small stones are already available on the market for about $100. De Beers will be pricing at about $400 ($800 retail). The difference is that De Beers will be pricing the large stones at the same price per carat as the small stones. This is much much less than the labs are selling. De Beers does not need to make a profit on the lab stones. In fact, they hope that they can change the perception of value for lab stones so much that prices fall to be the same as imitations such as CZ and Moissanite. It is their hope that by doing this they will preserve the value of natural stones because "rare is real", and lab has no value.

Yes, it is a big gamble, but they have no choice.


Top
 Profile  
Reply with quote  
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Wed Jun 13, 2018 1:26 pm 
Offline
Established Member

Joined: Sun Mar 10, 2013 4:13 am
Posts: 18
Barbra Voltaire wrote:
I ask because a colleague of mine (professional appraiser) spent $750 on a screener. Purchased several synthetics at the Vegas show and discovered her screener to be totally unreliable.

The EXA is reliable, but it is a $7,000 investment.

The EXA will also seperate natural IIA from synthetic, but can not determine if the diamond has been subjected to HPHT treatment.

Makes sense that synthetic type IIa have a brownish tint, like many natural IIa. That is why HPHT is used...to get those pesky carbon atoms to shape up.



Barbra , How to separate natural IIA from IIA synthetic by EXA (not HPHT processed)? Is it 100% reliable answer? Is it in Advanced User Mode? I cannot find it in manual . Can You explain it ?


Top
 Profile  
Reply with quote  
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Thu Jun 14, 2018 5:48 am 
Offline
Gemology Online Veteran

Joined: Wed Jan 23, 2013 5:29 pm
Posts: 860
Location: Paris
1bwana1 wrote:
In fact, they hope that they can change the perception of value for lab stones so much that prices fall to be the same as imitations such as CZ and Moissanite. It is their hope that by doing this they will preserve the value of natural stones because "rare is real", and lab has no value.


I see the point better.
However, what if the market gets literally overflooded with synthetic diamonds, to the point that nobody will be willing anymore to put money in this stone, and all diamonds, natural included, will be swallowed into this pit of contempt ?
Besides, people are getting more and more easily informed today, and it will be hard for De Beers to be able to maintain much longer the fallacious myth that "real is rare".
Plus, the argument of "eco-responsibility", be it false or true, might work well in some parts of the world, in favour of synthetics.
I have found - already - this website in french, which sums it all :
https://www.innocentstone.com/bijoux-ec ... ables.html

At the end of the day, consumers might become either confused or bored or suspicious of all this mess and just turn away from all kinds of diamonds, just to make sure that they are not being fooled some way or other.
Time will tell !


Top
 Profile  
Reply with quote  
 Post subject: Re: De Beers Lab Grown Diamonds
PostPosted: Thu Jun 14, 2018 1:39 pm 
Offline
Site Admin
User avatar

Joined: Sun Oct 16, 2005 12:22 pm
Posts: 18782
Location: San Francisco
Quote:
Barbra , How to separate natural IIA from IIA synthetic by EXA (not HPHT processed)? Is it 100% reliable answer? Is it in Advanced User Mode? I cannot find it in manual . Can You explain it ?


I'm sure Alberto or Mikko could explain this with far more clarity than I.

The EXA does NOT identify diamond types.
It identifies natural diamonds, separating them from lab grown.
Think this through....if a diamond is identified as natural, do we care if it is a type II?
The EXA can not seperate a natural type IIa from a natural type IIa which has been subjected to HPHT to improve color. Both will read as natural, as both ARE natural.

If it is identified as NOT natural we can presume it is type II.

Please feel free to correct me on any of these points. I am only repeating what I remember hearing in Tucson.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 51 posts ]  Go to page Previous  1, 2, 3, 4

All times are UTC - 4 hours


Who is online

Users browsing this forum: No registered users and 1 guest


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