Add to Cart Bead, unakite (natural), 9x7mm cone and 10mm T-drilled round, B grade, Mohs hardness 6 to 7. Sold per pkg of (2) 2-piece sets. Now: $7.90 MSRP: Was: 8mm T-drilled round and 8x5mm-9x6mm cone, B grade, Mohs hardness 6-1/2 to 7 Product Information …