The International Guild of Glass Artists, Inc. is an international not-for-profit organization association of artists, artisans and craftspeople who work with glass as a crafts and art medium.
Techniques and media used by members are diverse and include acid-etching, copper foil, fusing and slumping, glassblowing and casting, painting on glass, lampworking and flameworking, lead, zinc and copper came, glass mosaics, neon, sandblasting, and many more.
From the IGGA website: