清乾隆 仿雄黃料八棱長頸瓶 《乾隆年製》款

of octagonal form with a bulbous body resting a tall splayed foot, rising up to a slender neck, the glass of warm opaque orange and crimson-red colour swirled together to resemble the realgar mineral, the base inscribed with a four-character wheel-cut mark within a double square 

Compare a similar vase from the Walter and Phyllis Shorenstein collection, illustrated in The George and Mary Bloch Collection of Chinese Snuff Bottles, Hong Kong, 1994, fig. 4. See also a fluted 'realgar' glass bottle vase, sold at Christie's London, 3rd November 2009, lot 14.