RRM003 Blackrock Concave Base/Goshen: Made of some of the finest Red Tan Henry Mt. Agatized Wood. Measures 2 13/16" x 1 1/8" and was recovered by the family of Ardith Alexander while surface hunting their privately owned ranch land located in the Escalante Desert. Material is second to none and color is astonishingly beautiful. EX: Jack Crandall and Andy Coca Collections.