Simulated Peridot - $.10/carat.
This material is glass, but cuts a gorgeous stone. Cut at the same angles as quartz.
Seven-Up Bottleite - $.10/carat.
This material has been sold as Tanzanian Moldavite and Green Obsidian, but it's really just green glass that has been melted into "alluvial nuggets". We call it 7-Up Bottleite and it does cut gorgeous stones. Cut at the same angles as quartz.
Laser Gem - $.10/carat.
Laser gem is glass that has a similar refractive index as quartz and is cut at quartz angles.It cuts and polishes like quartz, but actually polishes much faster than quartz.