VTG Macasite Sterling Silver & Pearl Wreath Brooch

Vintage Marcasite, sterling silver, and (faux?) pearl brooch. I feel like the pearls are real but can't verify 100%. Stamped 925A for sterling silver. 1 1/8" across. Unsigned. Likely from art deco period. No flaws or wear noted. Comes from smoke-free home. Offers and questions always welcome.