Amethyst is VERY rare from Naica and large crystals literally almost unheard of - which makes this specimen a killer for the locale. Lustrous and translucent, light purple-colored amethyst crystals to 12.5 cm in length, form a floater bow-tie cluster! They have small bits of attached sphalerite in back, as the only contact. Although not gemmy, nor glassy like Guerrero or VeraCruz amethysts, this is a significant specimen in the size, habit, and locality representation departments. It is also very aesthetic, on its own merits.

The highlight of this specimen is the unusual, tapering tessin-style, 9.5 cm-tall , lustrous and translucent quartz crystal with chlorite inclusions. The inclusions color it a grayish green . The rest of the specimen is composed of a druse of calcite and several, splendent, brassy yellow crystals of chalcopyrite. An unusual combo for the locality

Two, very large crystals in parallel growth of danburite, to 10 cm in length, have been thickly encrusted by sparkling drusy quartz. The front side, which is a white quartz druse, is different from the back side which has a sparkling, colorless druse of calcite. Overall a very geometric and unusual specimen.

From a base of stubby, white quartz crystals has emerged a branching tree of lustrous and translucent, hematite included, quartz crystals, to 6 cm in length. For added effect , a druse of brassy yellow pyrite is scattered about on the quartz crystals. On first glance, this looks like a tree. It is extremely 3-dimensional, very aesthetic and unique when seen in person, and is NOT just another quartz.

This combo specimen from Santa Eulalia is visually compelling and , i think, a very rare find of which i have seen only 3 pieces in 25 years of looking. Spheres of sparkling, light pink rhodochrosite, to 2.35 cm across, line a vug and are perfectly preserved. Associated atop the rhodochrosites are several glassy and gemmy, light purple crystals of amethyst, to 1.5 cm in length. Som eof them even have rhodochrosite INCLUSIONS within. Very rare material. The only other piece i saw of this size was one from the Zinn collection, dated to the 1970s

Truly spectacular in every sense, these old classics are unique specimens. They turn up rarely, in old collections. An iridescent coating of marcasite nearly covers all of two milky crystals of quartz, to 6.5 cm in length. The marcasite colors range from brassy yellow, to emerald green, to to copper and magenta. I believe this to be one of the finer examples of this combination for its coloration, size, and aesthetics.

Four species on one specimen , with style! Here we have elongated crystals, to 2.8 cm in length, of finely crystallized, splendent, brassy yellow pyrite which have pseudomorphed (replaced) elongated pyrrhotite crystals. though the form is unusual, both the form for pyrrhotite and this replacement is well documented at this locale, and considered an old classic find. These are perched, along with lustrous black crystals of sphalerite to 3 cm across, on milky, translucent quartz crystals to 4 cm in length. All are of high quality and stick out in different directions like they were stuck into a pincushion, making this a very 3-dimensional specimen.