The official birthstone for September is Sapphire. Treasured for its regal blue hues, Sapphire was revered by ancient cultures as a talisman of protection, integrity and loyalty. Whilst most celebrated for its signature blue, Sapphire also reveals itself in a radiant spectrum of colours, each imbued with its own unique energy and allure.

At Kerry Rocks, we also honour Iolite as a September birthstone. This pleochroic mineral, also known as cordierite, reveals captivating shades of deep violet-blue. Though not recognised by all official birthstone lists, its resonance with clarity and inner vision makes it an inspiring choice for September-born souls.

Sapphire ranks 9 on the Mohs scale, making it one of the most durable and valuable coloured gemstones. Fine Sapphires, especially those with deep royal tones, command high prices, and their symbolism of wisdom and truth has enhanced their desirability for centuries.

Iolite, by contrast, is a more attainable option, offering violet shades that rival Sapphire’s blue at a lower price point. Its beauty and unique spiritual qualities make it an ideal and accessible alternative to Sapphire for those drawn to both its colour and energetic properties.

While traditional lists crown Sapphire as the sole birthstone of September, modern jewellery culture acknowledges additional gemstones for the month. Many jewellery brands, including ours, highlight Iolite as a companion stone for September with its violet‑blue vibrancy and rich history making it a celebrated alternative to Sapphire. In our collections, both gemstones are offered as September birthstones, Sapphire for those drawn to classic nobility, and Iolite for those who resonate with intuitive energy.

Sapphire – The celestial stone. Exuding wisdom and nobility in every hue, Sapphire has long empowered royals and visionaries, symbolising loyalty, endurance, and virtue. Revered since ancient times, it serves as a protective talisman, guiding the wearer’s decisions with clarity and integrity.

Iolite. The stone of muses. Its purple-blue shades fuel imagination, intuition, and creative vision. Once used by shamans and navigators, Iolite guides journeys of the mind and spirit, revealing new perspectives. Its high vibrations inspire self-expression, awaken inner wisdom, and elevate creativity beyond the ordinary.

Together, Sapphire and Iolite are recognised as September’s birthstones, allowing wearers to harmonise grounded intelligence with intuitive vision, ideal for Virgos and Libras seeking clarity and balance.