Tourmaline. The secret of powder is tourmaline beads, and precious tourmaline is pink and red. Due to the limitation of materials, most of them are bracelets made of round beads. Jewelry has a broad sense and a narrow sense. Jewelry in a narrow sense refers to jade products. Jewelry in a broad sense should include gold, silver, natural materials, minerals, rocks, creatures, etc. Jewelry, handicrafts or other treasures with certain value are collectively called jewelry.