Art Nouveau brooch with 2 Akoya pearls and 45 old-cut diamonds

Art Nouveau brooch with 2 Akoya pearls and 45 old-european-cut diamonds totalling approx. 1.05 ct, central diamond approx. 0.17 ct, WHITE-STW (H-J)/SI-P, probably natural pearls: D: approx. 3.3 - 3.4 mm, fine luster, 10K yellow gold, faceside platinum, 8 g, L: approx. 46.1 mm, W: approx. 23.9 mm, around 1900, minor signs of wear, needle slightly bented.