3D laser crystal is a solid block of glass that has been exposed to laser beams to generate 3D designs inside. The image is composed of many small points and appears to float inside the block. In this tutorial, I am going to show you how to create this effect in 3D Studio Max and VRay. Once you've learned about it, you can do it in other 3D software or render engine as well.
The scene is very simple. A block of glass which can be of any shape, and the model inside the block of glass. We will add a Vray material to this model to let it looked-like that it's made by laser engraving machine.
First, it is better to make the material for engraving model. You can hide the block of glass and at the end, unhide it. This is just to reduce our rendering time. Make sure you are using Vray as your render engine. No need to have any specific setup even if GI is disabled, it is still OK. I have provided the final file so you can check my setting.
Open Material editor. Apply VRayLightMtl to one of the free sample slots. Name it as you wish. I chose Engraving.
In VRayLightMtl settings, add Gradient Ramp in color map slot.
In Gradient Ramp Parameters change the color as shown in below photo. Left color be white. Middle and right color be black. White color is our engraving color and Black parts will be masked in the render. Change Gradient Type to Radial
We already made on spot. but we need to increase it. We have several ways to do it. One good place is Gradient ramp setting. increase Tiling. I used 30 for both U and V in my sample. You should try different values to find the best one.
Let's go back to our VRayLightMtl settings. Add same map that already made for Color slot to the Opacity slot. You can just copy it. Check Emit light on back side and Multiply color by opacity options. I increased the Color value to 15 as well. You can try different values. Your material for engraving model is ready. Apply it to your model.
There is one important tip here. If you need to use UVWMap to fix UVW on your model, you may use Box or Face mapping mode. If you choose Box mapping mode, then make sure that Length, Width, and Height have same values.
For the block of glass, you can make a glass material with VrayMtl material. Parameters in VrayMtl can be different depending on your glass. I've shared the setting of the block of glass in this tutorial.
Now you can render your final work. You can also use Caustic effect to make it look more realistic. To learn how to make caustic effect in Vray you can look my previous tutorial in this site