A small mottled-red 'realgar' glass bottle vase, China, Qing dynasty, 18th-19th century. Estimate $4,000 - $6,000. Price Realized $18,750. Photo Christie's Image Ltd 2015

Imitating realgar, with tall cylindrical neck and compressed bulbous body, the opaque glass of pale red color swirled with milky grey and dark red markings - 6 in. (15.5 cm.) high

The Collection of Robert H. Ellsworth, New York 

Christie's. THE COLLECTION OF ROBERT HATFIELD ELLSWORTH PART III - CHINESE WORKS OF ART: QING CERAMICS, GLASS AND JADE CARVINGS, 19 March 2015, New York, Rockefeller Plaza.