I was so happy he posted this video on IG! It answered many questions I had regarding stria and clarity issues. I've poured through MMD inventory through a few vendors, and I've always wondered if what I see on the videos would show in real life (pinpoint stria and that hazy/film-like glaze that looks like bad polish). Makes me feel way better about sending my future SIL to Distinctive Gem for a MMD, thanks @Rhino!
Stria are (is??) internal graining due to the way the material is laid down in layers in Chemical Vapour Deposition (CVD) diamonds.Is this due to the material, or is it because of the polish? Would a repolish fix the issue?
It varies.@OoohShiny interesting read, thank you for the link! I’m now wondering, if all lab diamonds with stria will have less fire, or only some, or will it be a scale?
... lab diamonds with stria ...
This is interesting because with the sudden spike in stores selling lab diamonds, I think some of the aspects that drew me to them are diminished, particularly ethical and ecological concerns. For those who are solely drawn by the price, more competition pulling prices down can’t be a bad thing. I’m not in the market for any diamonds now but the laser inscriptions and/or IGI certs that note the diamond is made in the USA would be more important to me next time I shop. Now it seems it would be not just for the ethical standards but perhaps the quality too.
In my (non expert!) opinion, I think that has a touch of stria showing, but don't forget it is massively larger on screen than in real life.
.I also find diamond foundrys prices crazy.
I agree Rhino - lighting and viewing directions make it very hit and miss with the chance of lining up with the grain direction.As I've been studying this rather intently and have purchased lab equipment that helps me not only in it's detection but degree upon which it can impact transparency and light return, I'll tell you that 360's and the still images they produce are not reliable for determining whether it'll impact it in real life or not. There are definite graining patterns to observe under microscopic examination that help to easily weed em out. There are no flags, positive or negative upon which to make that judgement call.
Growing large HPHT is not viable.
Double the polished weight with CVD takes way less than double the run time.
It seems pretty clear De Beers have the upper hand with know how and patents and no one is game to steal their IP. I think De Beers have that as part of their strategy. Try and we will bankrupt you!
Its fun to watch