Walk into most Hindu homes in India and you will find a sphatik — a clear quartz lingam or sphere — somewhere on the puja shelf. Often wrapped in a piece of cloth, sometimes resting in a small silver stand, occasionally just sitting quietly beside the lamp.Most families who keep one couldn't tell you much about why. It came from a grandparent, or it was bought at a temple fair. But the practice is old, and it persists, even in homes where nothing else on the shelf would be described as spiritual.What makes quartz different from other stonesClear quartz is unusual among crystals in that it is almost entirely transparent. The name itself comes from the Greek krystallos, meaning ice — early Greeks thought it was water permanently frozen by extreme cold. In India, the association with water and light runs through most of its ritual uses.Sphatik is used in Vedic rituals as a material that neither absorbs nor holds impurities. A silver or gold vessel might tarnish. Copper can react. Wood absorbs oils and smoke. But quartz, being neither metal nor organic, passes through generations of ritual use without changing. This permanence gives it a particular kind of authority.How to use a clear quartz point at homeYou don't need a puja room. A windowsill, a desk corner, or a bedside table works equally well. Place the point facing upward if you want it to function as a focal point — a place the eye returns to and the mind associates with stillness.The most important thing is consistency. A crystal you walk past every day does more for your practice than one stored in a box for special occasions.