If May is your birth month, you have one of the most rare birthstones of all: Emerald.

To understand your birthstone, it’s important to know what it’s made of. Emerald is a variety of the mineral Beryl, with a vibrant green color due to the presence of Chromium. (There has been an addition to “emerald” of green gems colored by Vanadium but the classic emerald look comes from Chromium-rich beryl.)

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