Herbarium No. 039 Scientific Name ROSA Common Name Rose Type Brooch Place Vienna Date Approximately 1910 Collected by Unknown hallmark: Ant 9? G? Material Rock crystal reverse intaglio, 585/1000 gold 14 ct Size  38,2 x 13,4 mm Total Weight 7,16 grams Condition Good Price 850 EUR     This brooch is marked with Viennese hallmarks. This specific technique is called ‘reverse intaglio’. A reverse crystal intaglio is a cabochon cut natural crystal with an intaglio carved into the flat underside. The roses were then realistically painted, and the stone mounted on an opaque background mother of pearl.  Finally, the back was sealed…