Birthstone Calculator

Find your birthstone

A birthstone is a gemstone traditionally associated with the month of your birth, worn in jewellery as a personal symbol and given as a meaningful gift. This calculator shows the birthstone for any month, along with the qualities it is traditionally associated with. April is the diamond, July the ruby, and September the sapphire, while some months have more than one accepted stone, reflecting different traditions.

Birthstones have been part of culture for centuries, with the modern list standardised in the twentieth century.

Birthstones as gifts

Birthstone jewellery is a popular and thoughtful gift because it is personal to the recipient, celebrating their birth month. Knowing the stone for a particular month helps when choosing a birthday or anniversary present. Several months offer a choice of stones, giving flexibility in colour, price and style, so you can pick the one that best suits the person or the piece.

The associations listed are the traditional symbolic meanings attached to each stone, which add sentiment to a gift. All information is shown locally in your browser.

Notes on this tool

Because the birthstone calculator runs entirely in your browser, you can change the inputs and see the result update immediately, with nothing uploaded and no sign-up required. Everything is computed locally, so your information stays private on your own device, and you can use the tool as often as you like for free.

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