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Zortje โ Diamonds
Published: 2011-06-19 12:30:36 +0000 UTC; Views: 4459; Favourites: 71; Downloads: 0
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Description
This is my first try at making diamonds in 3D, the hardest thing I find to be the lighting and reflection.It started out with me just playing around and ended up with a something diamond shaped object, but then I went on Google to find a guide on how the modeling should be done.
Thanks goes out to this tutorial: How to Create a Realistic 3D Diamond Ring Using 3DS Max
Modeled in 3D Studio Max, Rendered with V-Ray.
Post processed in Photoshop; boosting colors and adding vignette effect.
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Comments: 40
wow, I thought this was a picture, very nice work. You are very talented
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Really Good work! The hard work has paid off
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This piece has been featured [link]
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I'm going to go against the crowd here... No offense intended to other people, but these aren't very realistic.
(I do realize how hard diamonds are to make, they were a pet project of mine until just a few weeks ago when I turned out a reasonable result. Nothing below is intended to be insulting, just constructive hopefully)
A few things you might want to try -- increase the max refraction and reflection depth from the default 5 to something like 50 or 60. Diamonds have the "fire and ice" look in real life due to something called the "critical angle" and as a result "total internal reflection." In other words, there are lots of light bounces INSIDE the material, so the maxdepth should be turned way up.
You might want to turn up the caustics subdivs (select light, go to VRay properties I think) to clean up the noise caused by the caustics map.
Another thing I noticed, you forgot to create the "triangles" around the thick part of the diamond. It seems to be a straight extrusion, making a super short cylinder around the maximum width, whereas it should be a set of triangles. That tutorial foolishly did not say this, despite those shapes being in the reference picture.
If you don't already, add an HDR into the reflection override. Make sure it's one with lots of dark spaces, and lots of highlights with COLOR. (studio HDR will give very boring looks)
Lastly, and perhaps the single most important thing when rendering diamonds, you want dispersion. In real life, non-coherent light (pretty much all light besides lasers, ie, light bulbs, the sun, etc) is made up of photons each with their own different wavelength, and so color. Each wavelength of light refracts a different amount through material, allowing the famous "prism" to work the way it does, or rainbows. Diamonds, with a high IOR, have a pretty significant abbe number -- the difference in refraction between wavelengths -- and so you will see noticable dispersion of the light. If you add this, your renders will look instantly better.
If you have Vray 2.0, it's as easy as hitting the "dispersion" checkbox in the refraction rollout, in 1.5x it's kinda harder and more of a hack. You basically use a VRayBlendMtl without a base material, three to six layers. The layers are each identical except for a slightly differing IOR, and the mix value in the blendmtl rollout is set to a solid color. (so one IOR is assigned a pure red, another IOR pure blue, etc) This gives a fake dispersion, but it's better than nothing.
Here's a render from a few weeks ago I did of diamonds -- not perfect by any means, but maybe itll give you some ideas. [link]
Oh, while this if for Mental Ray, a lot of the ideas can be used in VRay...and it's a lot better than the tutorial you were using
[link]
Cheers!
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I thought its photo... 
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Iยดm glad I could fool you, thank you
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Nope, it is a computer generated 3D render
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That's absolutely amazing.
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Thank you, but it seems as if it is featured under "Photography", this is actually a 3D render
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Sorry. I already posted the feature. My apologies, but it's still giving your work recognition.
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I don't mind
If I fooled you because it looks so real, it just made my day!
And Iยดm just happy to get featured!
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Oh my! I was sure it's real but then I read it's made in photoshop.
Good job
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Actually it's made in 3Ds Max and postwork (post-processing) done in Photoshop. 
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Beautiful clarity and interesting composition. Lighting and reflection must really be a bitch when you're working with an object like that. I still think it's crazy that such realism can be achieved digitally.
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Its really fantastic that the software allows us to do this yes
Thank you for the comment
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Thank you very much
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ALso, I agree with ~mark1214 wow I thought it was a photograph! Still having trouble believing it's 3d lol
that's just mind blowing! faved
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Thank you very much, that means a lot to me
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