✡ Selenite develops in evaporite conditions when salt water evaporates, leaving gypsum deposits behind. It can also develop as a secondary mineral as a result of the hydration of other calcium-bearing minerals or in volcanically active hydrothermal veins.
✡Pyrite is formed in hydrothermal veins, sedimentary rocks, and metamorphic rocks. It requires iron, sulfur, and certain environmental conditions for its formation. Bacterial action can also contribute to its formation in sedimentary rocks.
✡Black obsidian is formed by the rapid cooling of lava or magma that has high silica content. As the lava cools quickly, it solidifies into a black, glassy rock without crystallizing, creating the unique properties of obsidian.
Note--1)Crack-like lines, fissures, uneven texture or beads and crystals are natural.
2)If a crystal breaks or snaps in half or in pieces, or sometimes could break while in transport … it does not affect the quality of the crystal. Crystals are naturally brittle and a broken crystal just means now you have more than one piece. Any crystal piece you have is any way broken from a larger chunk.
