Biedermeier style circa 1850 carved hard white on red stone (agate?) Unmarked Rose Gold or Rose Gold plated pendant

Hand carved high relief woman’s head from 1840th - 1850th, Biedermeier European style. White on red Agate or other hard stone. Cameo brooch total measurements is 22 mm. by 32 mm. . Unmarked Rose Gold/Gold plated filigree pendant. Good condition, but need some cleaning - specially on the back. The total weight is 6.9 grams