BCQLI 1.96 inches Night-luminescent Pearl-Fluorite-Iceland Spar,Crystal Ball Night-luminescent PearlDaytime are white, green evening release.(30 minutes to absorb sunlight, maintain the brightness) "Night Pearl" in the dark, the human eye can photopic, natural, can self-luminous jewels. Can Qingxin eyesight, exorcism and evil, enhanced home feng shui! Feng shui transporter ball Ancient emperors used(Can be used as a movie prop)