Rock Crystal

Rock crystals are clear, transparent stones that are generally softer and less wear-resistant than higher-priced gemstones; it sees more use as adornment on furniture and crowns than as everyday jewelry. Rock crystals of particularly fine grade —— that is, lacking any impurities — are used for high-end optics and prisms (such as eyeglasses, magnifying eyepieces, and spectacles). Prisms cut from fine grade rock crystal can be used as an augmenting component for prismatic spells.

Rock Crystal

Skies of Glass Planeswalker TheBronzeGryphon