Collection: October Birthstones

Historically, aquamarine was considered October’s birthstone in many cultures. George Kunz’s 1893 research confirmed that seven major traditions recognized it as such. Biblical references also support this, listing agate for October in the breastplate of Aaron and beryl (aquamarine’s mineral group) in the New Jerusalem Foundation Stones.
In 1912, the American National Retail Jewelers Association assigned opal and tourmaline to October. Tourmaline gained recognition only in the 18th century, meaning it lacks ancient tradition. Opal, however, has been valued for centuries—Ancient Romans prized it above diamonds, and in the Middle Ages, it was believed to enhance vision and attract luck. In the 19th century, opal’s reputation suffered due to superstition and literature, but after vast Australian discoveries, it regained popularity. Today, Australia produces 95% of the world’s opals, including the rare black opal.
For those who follow mystical traditions, aquamarine remains the strongest historical choice for October, while opal and tourmaline reflect modern commercial assignments.