Mustard seed amulet charm, with freely moving mustard seed under acrylic bubble. The reverse of this beautifully detailed charm, which can also be worn as a pendant, has the Bible verse Matthew 17:20 engraved: "If ye have faith as a grain of mustard seed . . . Nothing shall be impossible to you." Around the base is engraved: "Amulet of Faith". Metal Sterling silver. Not available in gold. Size 15mm diameter. Structure 3 Dimensional, mechanical.