IMPERIAL GLASSWORKS, BEIJING, 1700-1820

'Imperial' yellow is among the earliest colors produced in glass under the Kangxi Glassworks, from 1696 onwards. Because of the opacifying agent, early yellow glass bottles do not exhibit crizzling problems like other colors such as ruby red. Plain, yellow glass bottles thus maintained a consistency of tone and texture throughout the Qing dynasty and are typically difficult to date.