Dims: 3.8" x 2.5" x 2.4" (9.7 x 6.4 x 6.1 cm)
Wt: 14.1 oz. (401 g)
Minas Gerais, Brazil
One of my personal favorites, this specimen consists of a conglomeration of albite, muscovite, deep blue tourmaline, and several Smoky Quartz crystals. The largest of these "Smokies" has dimensions of 3.3 x 1.5 x 1.4" (8.4 x 3.8 x 3.6 cm) and has excellent hexagonal prismatic form with double pyramidal terminations. It shows only very minor damage, and has generally smooth faces and edges, though only three are not obscured by the host rock, and one of the visible ones has a thin coating of material over it. This coated prism face has a matte luster, whereas the others have the standard vitreous luster. Part of one of the exposed prism faces shows some very unusual formations that are akin to those on "elestial quartz" pieces. The crystal's color is a pale brown and it is transparent and moderately clear, though there are many internal fractures that provide interference. One or two faces on each termination are riddled with surface cracks. There are several smaller Smoky Quarz crystals visible on the specimen, but only two of these appear to be undamaged, and these are mostly buried. The most complete one has parts of tourmaline crystals growing into it that somehow create spots of brilliant colors inside. Only a few of the visible tourmalines appear undamaged. Their color is almost blue-black. The albite and muscovite do not appear to have definite crystal forms.