Rhino 8, rendering jewelry & diamonds

[Enrique_Gallegos]

Hi everyone,

My apologies if this question has been asked and posted numerous times. If someone can direct me to another thread, I’d greatly appreciate the help and direction! I’m currently using Rhino 8, and would like to achieve a realistic image for a jewelry piece that has a metal type material, and as well for the diamonds. I will eventually have to render out different jewelry pieces that have different shapes/cuts diamonds in the center.

I’ve tried the already-made preset material “gem”, and while it’s ok for on the fly renders, something is off? I get a lot of weird inconsistencies when I apply it to lets say a princess cut stone, or marquise etc.

I even tried to use a “glass” material with the IOR set at 2.42 with not much difference between the two.

I’ve searched through the forums and some people in different threads recommend making a “physically based material”, and mapping a diamond image (that I grabbed online) to the object. I’ve changed the mapping to WCS/OCS, and it appears to map it correctly to look like a diamond. It doesn’t look like light goes through the object, and it is a very still-like image when raytraced. Even the facets underneath the stone appear just wrong. If that makes any sense?

I’ve attached my poor attempts at rendering the three different ways I’ve mentioned above.
I appreciate all the work and help!

-Ricky

[Eszter_SMid]

Hey Ricky, have you got an answer / solution for this?

[Et_Rec]

@Enrique_Gallegos

I get a lot of weird inconsistencies when I apply it to lets say a princess cut stone, or marquise etc.

Those diamond cuts have very limited facets. Same goes for Emerald cut stones. Same reason in real life those stones have “windows” of little refraction. Helps to make your own 3d diamonds with exaggerated facets (adding in Rhino)., and then resizing as needed. Also play with the “gemstone refractive number or IOR setting. Also try to avoid the stone intersecting any metal (solid). Unfortunately I don’t think Rhino Render has a “ignore intersecting objects” in gem materials like Keyshot (maybe it does and I’m mistaken) . If not , wish Rhino Render did have that option. Helps to booleen difference out the metal with the stone. Hope this helps.