Dims: 2.2 x 1.8 x 1.4" (5.6 x 4.6 x 3.6 cm)
Wt: 4.4 oz. (123.9 g)
Tongren, Guizhou Province, China
A single, well-formed Cinnabar crystal rests on the dolomite-and-limestone base of this specimen. The crystal has dimensions of 0.6 x 0.3 x 0.3" (1.5 x 0.8 x 0.8 cm), and is in very good condition, showing two small spots of minor damage, one at the base of its termination, and one at its tip. Its trigonal prismatic form is excellent; it occurs in the form of a penetration twin, so that when viewed from above, the termination is in the shape of a six-rayed star (see the close-up image). Though a few are disjointed, most of its surfaces are well-defined and its faces are striated but generally clean, and possess a submetallic and almost adamantine luster. It has the classic deep red coloration of Cinnabar and is translucent under bright light, showing patches of dim transparence in some areas. It rests on a bed of white dolomite that has good rhombohedral form but is heavily damaged, which in turn coats parts of the brown limestone base rock.