Diamonds don’t have to be real to be awesome. In fact, they don’t even need to be 3D. Have a look at these:
1. An incredible wood veneer collage by Ron van der Ende.
2. Technicolour tessellation by Morgan Blair.
4. A subtly coloured diamond print by Aesthetic Apparatus. (I wish this pattern came as a duvet cover.)
5. Jewel-toned…jewels. Found here, original source unknown.