Faden Quartz from Colombia DS1557 prehnite Due to its relatively good

Due to its relatively good hardness compared to some other opals

Iridescent Pyrite on Stilbite from Kazakhstan

Locality: Skardu Valley

Weight: 26

Developed in the early 20th century and active for much of the mid-1900s

Faden Quartz from Colombia DS1557 prehnite Due to its relatively goodFaden Quartz from Colombia Approx. Dimensions: 3x2x1. 5 inches Approx. Weight: 73. 2 grams Locality: Santander, Colombia Faden quartz from Santander, Colombia, is a rare and highly aesthetic find, distinct from the more common specimens found in Pakistan or Russia. While Colombia is world famous for its "needle" and "muzo habit" high clarity quartz, these Faden (German for "thread") crystals are specialized alpine fissure growth formations