Major tantric scriptures describe the human body as an island of nine gems or navaratnas that correspond to the nine dhatus of the human body. The Puranas indicate the relationship of nine gemstones with the nine planets based on their colour and their effects on us. The Chinese and Egyptians believe in the mystical and therapeutic qualities of these gemstones. Astrologers believe that wearing the right gemstones plays a significant role in maintaining psychophysical well-being and ushers in peace, prosperity, happiness, fame, power, etc.