Vintage Abalone Pearl and Red Coral Charm Necklace, Gold Filled Chain, 18 offers inches long

This is a fun vintage assemblage that I put together with a thick gold filled chain, circa 1920s. The pendants are a coral branch, and a small abalone shell with a little white pearl pinned to it. All found vintage pieces. I tied the coral on so it is stationary in the center of the necklace but the abalone can offers move freely on the chain. Great piece for a beach scene! Some wear and scratches to the chain and abalone.
Chain measures 18 inches long. Pendant measures approximately 2 inches by 7/8 inch.
Not marked.