Dims: 5-1/4" x 3-3/8" x 2-7/8"
Wt: 1 lb., 9 oz
This excellent chunk of obsidian is that variety which is called rainbow obsidian, as can be seen by the colorful sheen on the fractured end of the specimen. It looks surprisingly like a shark's egg casing, with grooves in its side(caused by air bubbles) that resemble "worm tracks". The sides are covered with parallel grooves that are reminiscent of a basal cleavage, and likely have a lot to do with the specimen's color zonation. I personally picked out this specimen, and I really think it's one of the best that was available.