Faden Quartz from Colombia TF1443 iridescent goethite but gem-quality minerals such as

but gem-quality minerals such as heliodor and topaz only became known to the wider collector market in the late 20th century

Calcite specimens from Ghwai Lara

creating layered internal landscapes that are visible within the crystal

Quartz with Pink Dolomite

Locality: Cady Mountain

Faden Quartz from Colombia TF1443 iridescent goethite but gem-quality minerals such asFaden Quartz from Colombia Approx. Dimensions: 5. 5x3x0. 75 inches Approx. Weight: 247. 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