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. The name “poor man's emerald” refers to this gleaming green gemstone. The composition of peridot is what gives it its attractive green tones. Peridot contains significant amounts of iron and magnesium; iron gives peridot its green colours.