A Chinese Chert stone snuff bottle, Qing Dynasty (1644-1911). For an almost identical snuff bottle, see moss, Graham and Tsang, a Treasury of Chinese snuff bottles: the Mary and George Bloch collection, Vol.2, Hongkong, 1998, pp. 81-82, no.210, where the author outlines how the Bloch example was identified in the late 1960s by Geological Museum in London as 'Chert', a name given to a range of impure siliceous rocks, but that in the absence of taking a destructive sample, a question remains over this small group of attractive snuff bottles. 7 cm high