Glass pieces produced by lightning are called fulgurites.

VOA: special.2009.09.16

Remember,frit is crushed up pieces of glass. The glass that I have is a neon green and a bright orange.

VOA: special.2009.05.18

Then,the artist puts small pieces of glass material inside of the clay form.

VOA: special.2009.09.16

They are covered in colorful pieces of broken glass tiles.

VOA: special.2010.05.07

You want to keep spinning your mandrel so that it doesn't melt off the rod and you're going to heat your bead so that it's tacky enough to roll onto the frit and pick up pieces of the glass."

VOA: special.2009.05.18

Staring through the magnifying glass, Mikhaiel makes sure that all of the pieces - called tessarae - are exactly where they are supposed to be.

VOA: standard.2010.07.30

The 52-year-old uses miniature pieces of glass, stone and other materials to create intricately detailed mosaics that he hopes will inspire both the public and other artists.

VOA: standard.2010.07.30