A matrix of lustrous, colorless, quartz crystals, to .6 cm in length, is the host for a superb, lustrous, translucent, amber yellow, doubly terminated, sphalerite crystal, which measures 3.0 cm across. The aesthetics of the specimen are wonderful. This deposit is much better known for its world class copper and silver specimens. These very rare gem crystals came out in the 1980s. FEW gemmy sphalerites, twinned no less, are of this size! I have not seen a good one for sale in a long time.