How can I render diamond or any gem using rhino?
There is a diamond preset material in the gem material.
Another question regarding this if itās okā¦
In Keyshot thereās a place in the gems material setting to dial the size of the gem, the app then use it to calculate correctly the dispersion [I think but could be wrong] and the color density ā¦ do we have something in that direction in Cycleā¦?
thanks a lot
Akash
Hi @Akash
To my knowledge, Cycles - even the newest Cycles X - doesnāt do dispersion at all. Decent results can be obtained by ācheatingā, eg. using specialized shaders, but no actual, calculated dispersion. Iām sure @nathanletwory can elaborate (? 
)
HTH, Jakob
Correct.
But it shows transparent diamonds. So I want to know the settings for that & can you please help me for gold rendering settings for various colour & purity of gold.
Hi Jakob
thank you, I wasnāt aware of this going into learning [some] Blender for rendering purpose. certainly disappointing, and now with Nathanās official confirmationā¦ Iām wondering where else to look?
Keyshot Pro has very good āout of the boxā gem materials and jewellery Preset, but I find it limiting in several other ways. [I have the KS pro to ZB version which has imports and exports disabled but cost 1/4 of the regular version]
thanks a lot
Akash
Hi @Akash
Yeah, itās a shame, but itās free - which is more than can be said about Keyshot (who have no gone over to the dark side of a subscription business model 
).
There are plenty of other engines out there, but since Iām tied to Keyshot through work, Iām not familiar with most of them. I do see Bella popping up here a lot, and if I were to start with a new engine, I would start there.
HTH, Jakob
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Yes
I have ks 10 pro and no intention to upgrade farther.
what pushed me to Blender is the difficulties to work with Substance materials in KS.
[it was a UV thing coming from zbā¦ likely solvable but I lost patient]
Bella is looking very interesting, and I would imagine it support Substance through Rhinoā¦?
thanks a lot
Akash
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Could you give an example of this ācheatingā?
Hi @richard.aubin
Itās not something Iāve ever used myself - Iām a Keyshot guy. Thereās quite a few tutorials out there if you Google ācycles dispersionā - hereās one that seems fairly simple 
HTH, Jakob
Iām a VRay user, however I was hoping for some Rhino/Cycles help 
Donāt think the video you shared can be applied to rhino.
No, correct. This is Cycles in blender only.
-Jakob