Extremely photorealistic diamonds. This scene was rendered in vray 2.4 and all mats are included here. I spent quite a while dialing in the perfect diamond material and am very happy with the results. The diamond material is embedded in the scene file and you can export it to use in other files if you wish. It can be applied to anything so this is more about the material and lighting than the model as far as getting photoreal diamonds.
You can change the abberation, caustics, etc to get different looks as well as the color to simulate different gems besides diamonds. A lot can be done with this scene at a great value!