Recycling. Jewelry stores will recycle all kinds of precious jewelry, including jade, garnet, emeralds, diamonds and a series of precious jewelry. Garnet, a geological term, is one of the main rock-forming minerals in the upper mantle. Garnet crystals are very similar in shape and color to pomegranate seeds, hence the name "Garnet". Garnet with good color and high purity can become a gem.