Rating: AB. Condition description: Main body: overall traces of use.. Maintenance: polished.. Stone: diamonds. The Tiffany Co Return to Tiffany Smile Necklace features a curved bar of diamonds finished with small cross accents. Crafted in 18k gold. Features a curved bar set with diamonds. Finished with small cross accents at either end. Secure lobster clasp closure. Makes a beautiful gift for any occasion.