These handmade earrings contain one tiny mustard seed in each brass slim rectangle frame. A perfect gift to encourage and strengthen one to faith. The Mustard Seed is a symbol of faith. Ear hooks are made of 24k gold plated brass. Frames are brass. Materials are tarnish resistant. However, please see our care section for info on keeping your piece lovely for years to come. All materials are nickel and lead free. The symbolism of the botanical is printed on a tag that is attached to your jewelry.