Rendering Diamonds in Rhino 6

Rhino Rhino for Windows
1

Can anyone give me advice on rendering a diamond in Rhino 6? Round Diamonds come out much better because of all the facets, but other shapes come out more like glass at best. settings I tried

web%20settings
web%20settings346×936 41.8 KB
and one result
for%20web
for%20web1348×741 104 KB

2

Hello - Are you starting with a Gem material or starting from scratch with a custom material?

-Pascal

3

Custom . I don’t know why the first jpeg uploaded is greyed out until I clicked on it but that is my setting. Thanks

4

Hello - well, you might try starting from Gem - Color is black, and Fresnel reflection enabled, gloss 100. Is that any better or different? (Raytraced viewport is also worth a try for this - looks more sparkely here)

image
image.jpg1084×799 305 KB

-Pascal

5

Thank you. I will try your suggestions out.

6

Hey man, I have a file with a scene I made for testing rendering speed for Holomark3,
I can send it to you in a PM (personal message) if you like.

But it needs you to set the Cycles clamping to 3.

image
image.jpg747×633 85.4 KB

Here is what it looks like with default clamping (0) and it only gets worse with more passes.
(I used 150 passes on these)
@nathanletwory could you consider setting 3 as default (I know we have talked about that before though)

image
image.jpg839×644 110 KB

7

Thanks. Can you explain Where the setting for " Cycles clamping" is? Don’t know anything about that setting.

8

Sure, I’ll send the file in a few minutes.

You make a new button and paste this macro into it:

!_RhinoCycles_SetRenderOptions
_sample_clamp_indirect=3
_sample_clamp_direct=3
_Enter

And make another button with settings =0 to revert it back to default if you like.

(Or you just type RhinoCycles_SetRenderOptions hit enter and set the two clamp settings manually.)

2 Likes
9

Thank you . Will have to play with that. Need to understand a little of what RhinoCycles are, because I haven’t the slightest clue.

10

Pascal ,
I’m trying Gem > Diamond and see no settings at all

setting%20Gem
setting Gem.JPG359×575 19.9 KB

11

Hello - right, but if you change the ‘Type’ to Custom, you’ll see what is used.

-Pascal

12

I’m surprised, that one can’t expand the “Gem” material (all the preset Materials) to have more control, without having to start from scratch with a custom material.

13

Hello - if you start with any of the canned materials and change the Type to Custom, you get all the settings used by that pre-set material as the starting point.

-Pascal

14

Did not know that. Thanks for all your help

15

Hi, can someone share the setting with me to render diamonds?

I have tried the custom settings above and it does not work.

Thanks!