Tabasheer

Tabasheer is an opal-like silica found in the joints of certain types of bamboo. It is irregular in shape and is usually tumbled and buffed to a velvet-smooth finish and worn as tiny stones on rings, or fringe stones on jeweled pectorals or shawls. It is more common in the South and often used by southern traders as barter among northern barbarian tribes. A typical specimen has a base value of 50gp.