HPHT or CVD JP stone?

[concun]

Can you pls share your thought on choosing between Jann Paul HPHT vs CVD? The price difference is huge (45%) and I am going for 4ct so it is very substantial. I would choose HPHT with any other LGD but with JP, I wonder if their quality control can actually help to minimize the grains and worth the savings.
Btw, they already have the HPHT rough so it will take 4 months to cut/grading vs CVD will grow and take 6 months. This is not a deal breaker but an add on bonus if go with HPHT.
I need to make a decision in a day or 2. TIA.

 

[DejaWiz]

Can you pls share your thought on choosing between Jann Paul HPHT vs CVD? The price difference is huge (45%) and I am going for 4ct so it is very substantial. I would choose HPHT with any other LGD but with JP, I wonder if their quality control can actually help to minimize the grains and worth the savings.
Btw, they already have the HPHT rough so it will take 4 months to cut/grading vs CVD will grow and take 6 months. This is not a deal breaker but an add on bonus if go with HPHT.
I need to make a decision in a day or 2. TIA.

Ask them to provide the links to GCAL grading reports for a variety of their CVD diamonds so that we can check the crystal quality. JP is very meticulous, so I doubt there's anything to be concerned about, but it's best to see with your own eyes first for peace of mind.

 

[DejaWiz]

Here's a 4 carat Nova cut from CVD rough that someone at Reddit posted:

Gem Certification & Assurance Lab

www.gcalusa.com

 

[0-0-0]

How’s the return/exchange policy? I cannot tell the difference between well grown/cut CVD/HPHT with my naked eye so I would opt for the cheaper option.

 

[concun]

Since it is large carat and they cut from rough, it is considered custom cut and no return/exchange. I have asked for sample certs. While LGD price is dropped everywhere else, the price has gone up quite a bit due to demand at JP

 

[0515vision]

If it’s an emerald cut, I’d prefer HPHT. But since JP vets their growers, I’d trust their CVD. Also, since their cuts are super ideal and light return will be maximized, I’d feel ok with CVD.

Makes sense that they can keep their prices high. It’s the top tier of lab, and it’s a small operation with consistent development.

You must post photos when you finally get your ring! I have a JP band with melee.

 

[concun]

Couple of samples, do you see anything concerned? @DejaWiz @0515vision
CVD https://www.gcalusa.com/certificate-search.html?certificate_id=341130020
HPHT https://www.gcalusa.com/certificate-search.html?certificate_id=341130019