http://www.keystonegranite.com
This is 2cm Silestone being cut on a WaterJet. The WaterJet shoots a very highly pressurized and focused stream of water mixed with an aggregate like garnet to cut through basically what ever gets in it's way! It can easily cut through 1" steel and is able to make very precise designs as you see here!

Score: "Dragonborn" by the one and only Jeremy Soule. All rights to him and Bethesda.