Hello,
I use Rhino and have managed to render most colour stones effortlessly, however I find Salt and Pepper Diamonds to be tricky.
I am wondering if someone has figured out a way to render realistic salt and pepper diamonds. I have seen most people render a ‘grey’ diamond, but is there a way to get the lovely inclusions to be more prominent? If anyone has figured out a trick or two I would greatly appreciate any advice.
Warm Regards,
Luché
what is that? i had to google it since i never heard of it and i am still not entirely sure how that should look like.
if you have a reference please include it
shows diamonds with impurities in it.
You can probably do this by adding the tiniest objects inside your gem object and giving them useful materials.
Hi Encephalon,
Reference image:
thanks nathan, now i understand. so these are natural inclusions of carbon and whatever is left over sometimes even smaller diamonds. i am not a jewellery guy, but these look more appealing than the clear and stupidly expensive pendent.
i would offset some of the facets as surfaces and put a transparent png with some grey carbonish texture on and render the rest as a slightly smokey diamond.
the problem is that i noticed recently trying that transparent png do not render in cylces. i think i forgot to make a bug report, can you confirm that?
Hi Nathan,
My thoughts exactly. Its a bit of a round a bout way. I suppose no one has really tried it and mostly render a grey stone to get a similar effect, but its not quite the same.
Thanks!
I have the past week done several tests with transparent PNGs, they all worked fine. I used
, which I (not so skillfully) handcrafted myself!
i am rubbing my eyes,… it seems to work now 
did you change something recently?
@Luché_Oberholzer i had a quick go using the idea i described above,
i think that could work as a starting point.
I haven’t changed shader code in a looooong time.
ok… i keep rubbing my eyes then.
Amazing! Thank you. Definitely a starting point!
