"Jean-baptiste Desvignes - Opaline Baguier Cup"
Ring cup on foot in soapy crystal opaline decorated with flowering branches of anemones and forget-me-nots in silver and gold framed by gilded bands, executed by the workshop of Jean-Baptiste Desvignes. He was an active decorator in Paris from 1817 to 1826. He was a painter, gilder on porcelain and on crystals. In 1817, he filed a patent for a process of gilding and painting on crystal without firing or incrustation in the crystal. His decorations are characteristic because they favor a certain repetition of floral motifs. Slight wear of the gilding. Circa 1820-1830 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato