EXM71CDD: From the early days of the arrival of minerals from China to Europe, this is a good Cinnabar, with a very isolated and well-developed crystal in its Quartz matrix.
Tongren Mine, Tongren, Tongren Prefecture, Guizhou Province  China

Specimen size: 9.3 × 8.4 × 3.3 cm = 3.66” × 3.31” × 1.30”

Main crystal size: 1.8 × 1.5 cm = 0.71” × 0.59”