Aventurine is one of my most popular stones, so these are listings in brass that all match to help with making a jewelry ensemble. Rings are adjustable and nickel-free. The locket is on a 28" chain. The bird necklace and simple necklace are on an 18" chain. The large stone pendant with beads is on a 28" chain. Necklace lengths can be changed, just leave a note at checkout.