Last week when we were at Tuscon I came across this material. I had seen small pieces before but they were very pricey. I decided to try some since I have never cut and polished any. It is also called Chrome Chalcedony. They only had a few 7mm beads as an example of finished pieces and, unfortunately I didn't get any photos. The beads were a medium light green with a slightly mossy appearance. The material comes from Zimbabwe.
Nearly all the pieces were quite large and it took me a while digging through the pallets of rough to find a couple pieces that I could afford.
The prices were $100 a kilo ($45 a pound) if you bought a smaller quantity and $60 a kilo ($27 a pound) if you bought a 100 kilos.
Here are the photos:
The rough comes as large seam pieces 1" to 3" thick and with a lot of bubble-like indentations and convolutions. It definitely not shaped so that you could get very large slabs out of it.
The center piece is about 6" across.
These are the pieces that I bought. The large one is about 7 ounces and I paid $14 for it, about $70 a kilo. The smaller one 1s 2.3 ounces and I got it for $5. I was able to talk the dealer down in price because it was late in the last day of the show and he was in the process of packing things up.
I'm looking forward to cabbing this material after I finish some other cabs that I have already