I looked some info about this beautiful stone:
Green Goldstone is associated with growth and abundance.
It is a man made gemstone that has been around since the European Rennaissance.

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.
It is an energy stone.