The birthstones for November are topaz and citrine. Topaz comes in various colors and measures 8 on the Mohs hardness scale. It is mined in many countries around the world and in ancient times was believed to have various powers. Citrine is a variety of quartz that ranges in color from yellow to brown and is produced in countries like Brazil, Argentina, and Russia. It was thought in ancient cultures to have properties like increasing psychic abilities and bringing prosperity.