Citrine and topaz both serve as birthstones for the month of November. Topaz was one of the original modern birthstones selected by the National Association of Jewelers in 1912. Citrine was added to the modern birthstones list in 1952.
Citrine and topaz are both available in the yellow to orange color range, but citrine generally has a much lower cost. Citrine has a Mohs hardness of 7 and topaz has a Mohs hardness of 8. That information might make some people believe that topaz has a higher durability than citrine. However, topaz is a brittle mineral that easily breaks by cleavage. It has little, if any, durability advantage over citrine.

Faceted Citrine Heart: Citrine cut into a heart-shaped gem.