In the video below, you can see a section of a micromosaic table being recreated. The principles of this technique date back to the 1730s, but the tools have been updated since and the artists use modern ones today.
To make micromosaics, they first heat sand and chemicals in a furnace to make glass. For different colors of the glass, different chemicals are used under specific atmospheric conditions. Then, they cut the glass into squares which could be used for regular-sized mosaics. For micromosaics, though, they are melted again to get the tiniest pieces.
Click play below and enjoy the relaxing process.