This material was brought to us as a sample by one of our turquoise
suppliers. We loved it and ordered more. Sadly, he couldn't get any
more of this awesome cutting material. It turned out that the few
pieces he brought us were all there was to be had. The barite in this
material was infused with copper secondaries, most notably malachite
and chrysocolla with some spots of cuprite.
This material has fans of chatoyance caused by the cleavage plane
of the barite. These are super rare, and beautiful one-of-a-kind slabs
that will cut awesome stones.
Cuprous Barite is sensitive to shock and should not be cut with
coarse wheels. Although it may have a few small porous or vuggy areas,
it should polish up nicely with tin oxide. An extra final polish with
Zam (green rouge) will give it a better finlish.