Dims: 1.41x0.93x0.86" (3.58x2.37x2.19cm)
Wt: 0.93oz. (26.4g)
Gong Kuan Mine, Tongren, Guizhou Provence, China
A diamond saw was used to cut away most of the host quartzite, exposing a cavity in which numerous tiny quartz crystals and a single large cinnabar crystal have grown. The cinnabar is technically a twin, but it rests on one side and is distorted enough that only its symmetry reveals its nature. The cinnabar has a metallic luster, is deep red, and I believe it is transparent, although the surface luster makes it very difficult to see into the crystal. Careful examination with a loupe reveals several faces that expose an internal red glow. This is a fine crystal, even if it is not a perfect twin.