Quartz is a chemical compound consisting of one part silicon and two parts oxygen. It's the most abundant mineral found at Earth's surface and its unique properties make it one of the most useful natural substances.
This is a really cool quartz cluster from India. An interesting characteristic of this piece is that about half of the crystals seem to have crystallized sand surrounding the crystals. While this cluster was crystallizing particles of sand got trapped in the crystal structure. This feature ends up giving it a really neat texture.
Quartz is believed to be good for the endocrine glands, adrenal glands, heart and lungs and believed to help heal tumors and overcome control issues and addiction. Known for stirring up creativity and attracting good energy.