Ulexite is a mineral that has several synonyms like Boronatrocalcite, Boronatrokalcit, Butterstone, Cotton-ball-ore, Tinkal, and TV rock. The mineral is primarily found in Turkey and California, but smaller deposits exist across the world. Ulexite has a crystalline structure that makes it an excellent choice for optical uses. It is transparent to translucent and has a white or grey color. The mineral is commonly used in the manufacture of optical lenses and magnifying lenses, particularly in the film and TV industry. Its unique optical properties make it a valuable resource for improving image resolution and for observing optical phenomena. Ulexite's chemical composition is sodium calcium borate hydroxide, and it has a Mohs hardness of 2.5 to 3.