October has two birthstones—opal and tourmaline—because of a combination of historical, practical, and symbolic reasons. Traditionally, opal was the sole birthstone for October, celebrated for its mesmerizing play of colors and mystical properties symbolizing creativity, hope, and passion. However, opal is relatively delicate and considered too fragile for everyday wear by some, and has also been regarded as too feminine. To provide October-born individuals with a more durable and versatile option, tourmaline was added as a second birthstone. Tourmaline is appreciated for its wide color range, durability, and complementary symbolism such as balance, protection, and healing. This addition allows people born in October to choose between two distinct gemstones based on their personal style and needs, making October unique among months with this dual birthstone distinction. The practice evolved through various traditions, associations, and modern adjustments by jewelers and associations over time.
