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Birthstone Calculator

Enter the birth month number (1–12) to get the corresponding birthstone.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

This calculator looks up the modern birthstone for any birth month, using the standardized list adopted by the Jewelers of America in 1912 and periodically updated since (most recently adding spinel to August in 2016). The list runs from garnet in January through amethyst in February, aquamarine in March, and on to turquoise, tanzanite and zircon in December.

Some months have more than one accepted stone today — a change made partly to offer more affordable or widely available alternatives to historically rare gems. Jewellers, gift-buyers and anyone shopping for a birthday or push present use this list as the go-to reference for a personally meaningful stone.

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