According to the theory of geomantic omen, crystal vases can ward off evil spirits, attract wealth and increase aura. Crystal material can absorb and transform negative energy, keeping the room clean and harmonious. At the same time, the transparency of the crystal vase can increase the refraction of light and make the room brighter. In addition, the crystal vase can also reflect colorful light, adding beauty and vitality to the room. Therefore, placing crystal vases in the living room is the most auspicious choice.