"SUPER RARE - VERY COLLECTABLE"
Silver Crown Mine Psilomelane Cab Rough. Silver Crown Mine, Chihuahua Mexico. Material know from one other location, but is badly pitted and is not gem quality. This is the only known gem cab quality material known in the world. Chalcedony agate that has bands of the mineral barium-manganese oxide and rhomaechite with a hardness of about 7. The Silver Crown Mine is the only known location in the world that the high quality banded material comes from. The material takes a mirror fine polish with each cut stone with its own distinct pattern. Rich charcoal black with greyish white bands. A spectacular gem! High-end cabbing or carving rough, natural rough piece. 

Psilomelane Rough #psil-150.0 CAB AND CARVING GRADE 40.15 x 31.41 x 21.09mm 150.0 Carats $38.00

Psilomelane Rough #psil-120.5 CAB AND CARVING GRADE 40.64 x 22.96 x 17.65mm 120.5 Carats $32.00

Psilomelane Rough #psil-362.0 CAB AND CARVING GRADE 75.36 x 34.07 x 21.91mm 362.0 Carats $62.00

Psilomelane Rough #psil-516.5 CAB AND CARVING GRADE 61.01 x 39.81 x 28.86mm 516.5 Carats $78.00