Goldstone is a manmade gemstone consisting of copper and glass.
Goldstone has been around since the European Renaissance. Early monks working at a glass factory near Venice, Italy were practicing alchemy when molten copper accidentally tipped into a molten glass container. This crystallized into thousands of tiny crystals and formed a melt with golden light sparkles. This is how the first goldstone came about. Though it is not technically a gemstone, it is often referred to as one.
Goldstone is an energy stone. The Red/Rust Brownish stone is associated with vitality and energy, Blue with learning and communication and Green with growth and abundance.