Individual Facet Rough Pieces for the USFG Single Stone Contest

Individual Facet Rough Pieces for the USFG Single Stone ContestThis is rough specially sawn and selected for the USFG 2026 single stone competitions. If you're a faceter but not a member of the USFG yet you should join! It's a fun organization that does a ton for the community, you can join it here https: usfacetersguild. org For this year's contest the pre master material is spinel, master is YAG and grandmaster is moissanite I'll be making sure we have a variety of each type available here, bear with me as I

at the time one of America's greatest sapphire growing companies

resulting in hollow needles and carbon clusters which ruined them for semiconductor usage but left enough clean zones (after extensive trimming) to facet brilliant gems

It is an excellent gem

easy-to-use cheater with 1/4 degree markings

and very new as a gem since we first brought it to the gem market in 2022

999% pure polycrystalline material made in Germany

They are essentially polycrystalline lab sapphire--the multi-step growth allows for greater purity which is essential for making ultra high end industrial sapphire

It is also a wonderful gem with a high hardness of 8

the listing is here

not the material codoped with Cerium

at the very least with this particular formulation

materials and techniques