Large Clear Quartz Crystal Heart Sandro Botticelli on Twitter: "The Virgin from The Virgin and Child. You will receive one large Clear Quartz crystal heart similar to the ones in the pictures. This beautiful craft supply is perfect for making statement jewelry, crystal grids, terrariums, and more! Size ~ 40mm Clear quartz, also known as rock crystal or white quartz crystal, is an extremely pure stone. Clear, lustrous, and elegant, it draws the eye with ease. Not only a beautiful stone, clear quartz is also one of the most powerful. It is known as the master healer, possessing extremely powerful healing abilities. It is also a powerful amplifier of energy and other crystals, making it absolutely essential to any crystal grid. Clear quartz provides emotional and spiritual balance, and helps unblock the crown chakra.