sentence: Peridot is one of the few gemstones that comes in only one color.
sentences_after: The darkness of the green depends on how much iron there is. The color varies from yellow-green to olive to brownish green. Olivine is a very common mineral, but gem-quality peridot is rather rare. Peridot is the birthstone for the month of August.
concept_name: Peridot
headings: Peridot
categories: Birthstones