Pearlina Cultured Pearl in Oyster Necklace Set Rhodium Plated Sea Shell Cage Pendant W/Stainless Steel Chain 18" Cage is rhodium plated over base metal copper , chain is Stainless Steel 18" Sea Shell shape cage & 18" chain Cage size 0.9"Lx.75"w Exterior box design & color may vary pearl size 5-7mm, pearl color will vary, black pearls are dyed