From time immemorial Crystal, one of the Semi Precious Stones also known as Sphatik in India, is regarded as an excellent medium for religious practices. Not only the Hindus, but the Christians and Muslims also use Crystal mala as a Japa Mala or Prayer Beads. Its naturally cool tendency makes it an ideal product to wear to keep one cool. Quartz is a power stone. It has been called the "Universal Crystal", or Spatik and is the most recognized type of crystal. It's what many people envision when they think of crystals, even though there are many types of crystals. Quartz can be icy clear or have inclusions, veils, bubbles, etc. Visual clarity normally isn't important to a quartz crystal's energetic quality and ability to amplify subtle energies. Clear quartz is associated with the crown chakra, but also works effectively to balance and energize all chakras.