Dorothysgift Gift Mustard Seed 14mm in Clear Quartz Crystal on 20" Sterling Silver Plated Chain w/Scripture Card Mustard Seed in Natural Clear Quartz Crystal 14-15mm round,( approx size of a marble). Great gift 20" Sterling Silver Plated Chain 18" and 24 Very unique and is the most versatile crystal, since it can be used for healing, cleansing and energy work. Matthew 17:20 Scripture is in 2nd picture. This comes gift boxed with bow and free standard shipping. 20" chain available if noted on order If going directly to recipient, no pricing will be enclosed.. Please note if you would like a message on card Comes with card explaining quartz crystal special spiritual qualities