Historism brooch with oriental pearl and diamond roses,

Historism brooch with oriental pearls and rose-cut diamonds, natural pearl with beautiful lustre ca. 7.5x8.5x13.5 cm, 5 diamonds Amsterdam rose totalling ca. 3.3 ct, further small rose-cut diamonds totalling ca. 1 ct, 14K RG, face side silver, 15.3 gr, W: ca. 6 cm, mid-19th century, good condition consistent with age, diamonds slightly stained in the setting.