Brooch with ruby approx. 1.2 ct, 2 brilliant-cut diamonds

Brooch with ruby ca. 1.2 ct, 2 brilliant-cut diamonds totalling ca.0.64 ct, WHITE (H)/VS, 66 brilliant-cut diamonds and 16 single-cut diamonds totalling ca. 3.22 ct. WHITE (H)/VS-SI, WG 18K, 16.7 g, L x W 54.7 x 27.6 mm, replacement value €12,100, 20th century, good condition. Manijeh Steiner certificate no.: 20250112001 from 01/2025 enclosed.