Chrysoprase

Chrysoprase is a gemstone form of Chalcedony. It is commonly apple green, but can range from dark green to olive and turquoise colors. It has a Mohs hardness range of 6-7. It is found in numerous places, including Australia, Indonesia, Europe, Brazil and California. 

Chrysoprase is thought to bring prosperity and and a positive mindset. Chrysoprase is strongly believed to open the heart chakra, allowing for emotional balance and empathy.