Dangle Earrings › Heart Lock Earrings Image 1 of 1 Heart Lock Earrings $15.00 These are made from laser cut acrylic and nickel free, hypoallergenic metals. These are about 1.5 inches long. Add To Cart Added! These are made from laser cut acrylic and nickel free, hypoallergenic metals. These are about 1.5 inches long.