This double, full groove shines and reflects color just as you see it here. Spectacular specimen carved from an unknown substance often referred to as diorite on the circuit - which is like an enamel / glass type of mineral. Origin of this mineral is unknown at this time. Has been examined by Forensics and found to contain no modern tool signatures of any kind. Highly polished by hand and mirrors well whatever light hits it. The piece has never been published with the exception of being featured in the video production titled "Photoshow II" of 1995. It measures 9.3 cm. in length and 4 cm. in diameter. Listed for $325.00. Shipping, handling and insurance $15.00.