Peridot has a vitreous lustre and comes in a variety of colours, including olive green and can be green with a touch of yellow. It can be found in the dark shades of green as well. As an olivine, peridot is a member of the orthorhombic crystal system. This alluring gem's meaning is tenacity, focus, and purpose. Peridot is a birthstone for people who were born in the month of August and creates stunning Birthstone jewelry for those born under the sign of leo.