Selenite Hex Box With Lid Uniqueness Guaranteed: Every item is one-of-a-kind, making them ideal for all projects or designs. Dimension: 3 inches Wide, 2.5 Inches Tall Material Origin: (Morocco) Selenite, sometimes also called satin spar, is a variety of gypsum that tends to grow either in long fibrous or flat plate-like crystals, which can result in opaque or translucent pieces. An extremely soft mineral, selenite will often contain small inclusions of other minerals or internal cleaving where different crystal shapes meet. Please note: Selenite is a brittle mineral and will naturally degrade over time and with exposure to heat or moisture.