Auralit

Auralite is a naturally occurring mineraloid composed primarily of silicon dioxide, similar to opal, but distinguished by its unique phosphorescent properties. It is found in various locations, with significant deposits reported in parts of Australia and North America. The mineraloid is characterized by its glassy luster and a vitreous to subvitreous sheen. Its color can range from milky white to pale blue, and it often exhibits a subtle play-of-color, though this is less pronounced than in precious opal.

The defining characteristic of auralite is its phosphorescence. When exposed to ultraviolet light or other sources of energy, it absorbs and then slowly re-emits light, creating a soft, ethereal glow. This luminescence can persist for a period after the light source is removed. The exact mechanism behind this phosphorescence is still a subject of scientific investigation, but it is believed to be related to impurities or structural anomalies within the amorphous silica matrix. Auralite is generally considered a relatively soft mineraloid, typically ranking between 5 and 5.5 on the Mohs hardness scale, making it susceptible to scratching. Due to its unique glowing properties, auralite has garnered interest in the fields of mineralogy and gemology, as well as in metaphysical and healing practices, though scientific evidence for the latter is lacking.