A Venetian Chalcedony trembleuse beaker and stand, first half 18th century. Photo courtesy Bonhams. 

The glass marbled in tones of brown and green, the beaker with aventurine inclusions and of footed trumpet form, the stand with a deep central well and an inverted rim, the upper surface in green only, beaker 8cm high, stand 12.3cm diam (2). Sold for £4,375 (€5,206) 

A similar beaker and stand is illustrated by Hugh Tait, The Golden Age of Venetian Glass (1979), no.169, p.106 and further examples by Anna Elisabeth Theuerkauff-Liederwald, Venezianisches Glas der Veste Coburg (1994), pp.485-489

Bonhams. FINE EUROPEAN CERAMICS, GLASS AND PAPERWEIGHTS. London, New Bond Street - www.bonhams.com