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October birthstone

October has 2 birthstones: Opal and Tourmaline. Opal is the traditional choice; Tourmaline is an official alternate.

The October stones

Opal

Traditional
Color
Shifting flashes of color (play-of-color)
Mohs hardness
5.5–6.5 / 10
Everyday wear
Better suited to earrings and pendants than an everyday ring.

Tourmaline

Alternate
Color
Many colors, often pink and green
Mohs hardness
7–7.5 / 10
Everyday wear
Fine for daily wear with a little care.

More about October birthdays

Birth flower
Marigold →
Zodiac signs
♎ Libra (October 1–22), ♏ Scorpio (October 23–31)

Famous people born in October

They share the opal birthstone (or its alternates).

Born in October? See your exact age, generation and more.

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