Lab Diamond Vendors

posted 4 months ago in Rings
Post # 2
Member
11 posts
Newbee

Brilliant Earth has the largest stock

James Allen just started carrying lab diamonds so their stock is limited but you get better service and they often can provide ideal scope images upon request

 

Lightbox is the cheapest. 1 carat is $800, ½ carat is $400, ¼ carat is $200 from what I heard. These stones do not come with lab reports however, In My Humble Opinion you don’t really need lab reports for lab diamonds since the best labs will not grade lab stones anyways. 95% of lab diamonds are graded by IGI and the rest by GCAL. Both labs are ok but not comparable to GIA or AGS. The problem with IGI and GCAL is that their cut grades are more loose than GIA/AGS. A diamond that would only receive ‘very good’ at GIA/AGS would get an ‘excellent’ at IGI/GCAL. So keeping that in mind, you probably won’t be able to find the highest grades of cuts with lab diamonds even if you go with one with a lab report. Therefore I think there’s no big difference between a lab diamond with a certificate and a lab diamond without(Lightbox). So I’d go with Lightbox if I were you.

Post # 3
Member
265 posts
Helper bee
  • Wedding: May 2020 - Austin, TX

Mine was purchased though Brilliant Earth as well as the setting. No regrets!

Post # 4
Member
4187 posts
Honey bee

peperomia :  Actually GCAL is a pretty good outfit, it’s not as widely known. I have a diamond that was graded by AGS and GCAL and the reports agree. 

Post # 5
Member
290 posts
Helper bee
  • Wedding: June 2021

My ring is Brilliant Earth and GIA certified. I love it. Really happy we went with lab grown diamonds. Clean Origin is also a reputable lab grown diamond company. 

Post # 7
Member
11 posts
Newbee

Anastajah :  I think CVD is chemical vapor deposition and I’m going to guess that hpht is high pressure high temp. I think it’s just the description of how the stones are created. I don’t know if one is better than the other. 

Post # 8
Member
1284 posts
Bumble bee

Anastajah :  I just ordered two .50 carat lab diamonds loose for a 3 stone gemstone ring project from this company.  The shipping is included in the price along with cert’s.  I believe they are all CVD and they are starting to stock larger sizes

https://veandvile.com/lab-diamond-selector

I have also ordered from Starsgem directly from China and those are HPHT.  They have no cert and I found their colorless was more like near colorless and ‘very good’ instead of ‘excellent’ cut but still VS2. You can contact Cherry Zheng at [email protected] for prices or go to Alibaba and contact them through the messenging app’s or WhatsApp. 

I have also had a Lightbox pink diamond.  Those are CVD from where I read in certain places and other places say they are HPHT.  I think CVD is considered a newer technology and some CVD diamonds are also HPHT treated for color enhancement.  With Lightbox, they have not had an actual 1 carat diamond yet except for the Princess cut. Most have been 1ctw but I expect there will be more available once their Portland location opens in 2020.  You have to add on shipping and the cost of the setting too.

The first two are much cheaper than Brilliant Earth and I know Starsgem also carries lab diamond pave as well.  If you want something under .50 carat, then you could probably find it from Lightbox but they only deliver in the US.

Post # 12
Member
1284 posts
Bumble bee

Anastajah :  under a microscope there are differences but it is still just carbon at the end of the day. It is will sparkle like a diamond and perform like a diamond if it is well cut. If you were after a center stone, you might look to other vendors but for small pave rings, I think this is perfectly acceptable. Just keep in mind that their DEF color is a lot closer to an H or an I. I think that is the problem with the HPHT diamonds but a round in these color grades can still look pretty white. 

I like Mona a lot and she is trying to do a good job. She just doesn’t have the infrastructure in place yet to be consistent in her product. She uses different supply chains so she can’t always deliver what is ordered or the end product is inconsistent. SG is a much bigger company and they make and cut all their own stones. The technology is changing quickly and she will get there but it takes time.

Lab diamond prices are going to keep going down but probably not as much for some of the larger stones as quickly as we would like. Either way, it is fun to design some jewelry with the Chinese companies for some affordable prices that still have some quality to them. Good luck!

Post # 14
Member
1284 posts
Bumble bee

Anastajah :  this really is the question that everyone wants answered and I wish I had a crystal ball.  In the last 2 years, they have already dropped quite a bit.  Even a lot of the Brilliant Earth 1 carat loose diamonds were $2800 a year ago and are now closer to $1800 or less.  When Lightbox launches in 2020 with their $800 per carat lab diamonds, I will expect them to get closer to this price range for 1 carat and under.  It is still hard to grow rough large enough for bigger diamonds and in fancy shapes so I expect those are still going to be expensive for awhile.  I think eternity rings or side stones are a great way to save money though right now until we see the prices drop for some of the larger stones.  It might be awhile as it will be directly related to how many people enter the market and how much market demand there is.

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