Two large, very sharp Wulfenites that are included by some other minerals to give them this unusual, but very attractive, black color. The crystals themselves are gemmy and have a superb mirror-like luster. The luster is so good, in fact, that to try to show it on the main faces would have washed out the pic! This is a killer that is far better in person than even the pics convey. The crystals are transparent in the centers, by and large, so you can see the minute inclusions nicely when backlit (as shown). It is that good! Purchased from the Zweibels in 1976