Cinnabar of approximately 8.1. The color and properties derive from a structure that is a hexagonal crystalline lattice belonging to the trigonal crystal system, crystals that sometimes exhibit twinning. Cinnabar has been used for its color since antiquity in the Near East, including as a rouge-type cosmetic, in the New World since the Olmec culture, and in China since as early as the Yangshao culture, where it was used in coloring stoneware. Associated modern precautions for use and handling of cinnabar arise from the toxicity of the mercury component, which was recognized as early as ancient Rome. The name comes from
Cinnabar Theater Cinnabar Theater The Cinnabar Theater, located in Petaluma, California, is a professional non-profit theater producing opera and musical theatre, drama and a chamber music series in a 120-seat venue, under the auspices of the Cinnabar Arts Corporation. The venue is also home to the Young Repertory Theater (founded in 1983), the longest running and largest youth performing arts program in Sonoma County. The company's Music Director is Mary Chun. The theater, a 1908 schoolhouse, was purchased by Marvin Klebe (1935–1999) in 1970. Klebe converted it into a theater, which opened in 1972 as a venue to produce opera and musical