- Microcline (Var: Amazonite)
- Cabinet, 10.1 x 8.3 x 6.7 cm
- Rocket Claim, Crystal Peak area, Teller Co., Colorado, USA
Discovered in 1994 by Jack's friend, claim owner Paul Geffner, this cluster of microcline var. amazonite has moderate luster and a pleasing turquoise, blue-green color. The largest crystal measures 8.0 cm in length. The cluster is robust and complete all around except for some minimal contact on the backside. Ex. Jack Halpern Collection.