Our Minimalist Bar necklace is made with either a delicate brass or silver frame and is perfect for everyday wear. Available in your choice of a Mustard Seed or Fern: The Mustard Seed is known as a symbol of faith The Fern is a symbol of sincerity. The symbolism of the botanical is printed on a tag that is attached to your jewelry. Materials are tarnish resistant. All materials are nickel and lead free.