"Melee diamonds HPHT is whiter, CVD is slightly lower quality to look like natural" how accurate is this?

[DiamondDuck]

So I've been chatting with a few Indian diamond sellers. Both of them has this opinion:

- HPHT = DE color, super white + transparent. Higher quality
- CVD = EFG color, look more natural. Bangkok / Dubai mostly buy CVD, rarely HPHT (from them, at least)

I've always bought only HPHT diamonds (because the first big one I buy is a HPHT diamond from JannPaul and it looks great), but I'm thinking about buying some CVD melee to test.

Could someone in the trade give their opinion about HPHT vs CVD melee diamond? Also remember that buying direct from India as a consumer means no screening or quality assurance, so we need to talk about the average quality.

Thank you.

 

[0515vision]

I'm not in the trade, but I hope you don't mind me nosing in.

Opinions about lab are highly regional. East Asia (Korea, China) has a different view of lab from the US and on and on. So take regionality into account when you hear about buying/selling practices.

Am eager to hear what the tradespeople know about this. Love that decagon of yours!

 

[DejaWiz]

DiamondDuck that's a patently false lie.
CVD is pushed because it's the growth method with much cheaper equipment cost and it can withstand poor power infrastructure start-stop cycles. The downside is that CVD almost always has some degree of graining and can also have issues with weird clouding and carbon specks - ironically, HPHT is used to actually improve the color and clarity of CVD grown rough, but any characteristics such as graining, clouding, or carbon specks usually won't be diminished or eliminated to be completely free of potential (huge) issues such as light scattering, haziness, or even birefringence like a Moissanite.
I consider HPHT the far superior and less troublesome growth method.
HPHT can be found well into the I-L territory without being a boron blue (blue nuance) or any other weird hues from other elements...just regular yellowish hue as also found in natural earth grown diamonds on the standard D-Z color grading scale.