Blue sandstone

English
Blue Goldstone

Origin
United States

Introduction
The primary chemical component of blue sandstone is silicon dioxide (SiO₂). It contains trace amounts of copper or other metallic microcrystals, which are responsible for its starry sparkle; it is also known as "blue gold sand" or "star stone."

In European religious and alchemical texts, it is considered a stone symbolizing wisdom and divine order, used in amulets or religious artifacts, representing humanity's desire to understand the universe and truth.