Whether garnet cracks can be identified by strong light. Generally, jewelry stores have flashlights, which can be seen clearly. Garnet is naturally formed, and ice cracks are inevitable in inclusions. The fewer cracks in the ice, the better. Generally, all crystals can be measured by the number of ice cracks. Garnet is naturally formed, with black spots and ice cracks, which can be easily seen by the naked eye.

Garnet is a mineral, and its crystal is very similar to pomegranate seed in shape and color, hence the name "Garnet". Garnet with good color and high purity can become a gem. Garnet, the English name of garnet, evolved from the Latin word "Granatum", meaning "like a seed". The common garnet is red, but its color variety is very wide, covering almost the whole spectrum of colors.

The chemical composition of garnet is complex, and different elements form different combinations, thus forming a series of garnet families with isomorphism. There are common garnets, containing chromium and iron, which are red, purple and maroon. Followed by almandine, purplish red, with inclusions in the crystal, which can be used to figure out the starlight; Garnet is light rose purplish red, which is one of the important varieties of this kind of gem. Eclogite contains trace vanadium and chromium ions, so there is a green variety called top grade.