title: Can you model a gemstone/diamond in three.js
body: <p>I have been using advanced renderers like Vray to render gemstones (offline). I am working on a project to render them in real time using three.js</p>
  
  <p>I am not a 3D expert and am wondering if its possible to implement some of the more advanced refraction, reflection shaders to simulate a sparkling/faceted gemstone, and if so where can I find the code to implement it</p>