Clear Quartz is known as the "master healer" and will amplify energy and thought, as well as the effect of other crystals. It absorbs, stores, releases, and regulates energy. Clear Quartz also draws off negative energy of all kinds, it balances and revitalises the physical, mental, emotional, and spiritual planes as well as enhances psychic abilities. As it's safe and non-toxic, it can be used to energise bath water or consumable elixirs. Clear Quartz is a stone of power that amplifies any energy for intention, enabling you to find your ultimate potential at all stages of life, it is infused with purpose which is particularly useful if you lack direction or feel lost in life, allowing you to acknowledge the unique gifts you have to offer the world. Clear Quartz amplifies personal energy, which can be useful in times when you need an instant lift or spark to keep on keeping on. It also helps to protect your energy from draining from certain people or situations that tend to feed on positive energy. These gorgeous large quartz points are filled with inclusions and gemmy refractions that glimmer when exposed to the sun's rays. Measurements: Medium: measures 11-12cm and weighs 90-100 grams. Large: measures 14cm and weighs 172 grams.