Brooch, beautiful depiction

Brooch, beautiful depiction of an oak branch, set with 2 baroque cultured pearls and 172 rose-cut diamonds totalling ca. 6.0 ct, 1 pearl slightly loose in the setting, RSG 14K and silver setting, 75 g, L x W 11.5 x 5.8 cm, brooch fastened with threaded pin, also detachable, 20th century, signs of age and restoration, partially fastened with pewter.