Montana Sapphire Octagon Ring
Description
The Octagon Montana Sapphire Ring | A One-of-a-Kind American Heirloom
If you’re looking for a ring that blends ancient history with a bold, geometric aesthetic, this Octagon Montana Sapphire is a standout. Forged deep within the earth 150 to 200 million years ago, these sapphires are a true American treasure. Ethically mined under the big skies of Montana, this stone is natural in color, meaning it hasn’t been treated—it is exactly as nature intended.
We love the balanced, structural feel of this cut-corner square cut. The octagon silhouette offers a sophisticated, vintage-meets-modern vibe, showcasing a deep blue hue with those signature flashes of teal. Set in a full bezel, the sapphire is framed in a smooth halo of metal that protects the stone and highlights its unique geometric shape, making it perfect for effortless, everyday wear.
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The Stone: A .76 carat Cut-Corner Square (Octagon) Montana Sapphire.
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The Color: A deep, rich blue with mesmerizing teal blue undertones.
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The Setting: A full bezel for a sleek, secure, and snag-free finish.
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The Origin: Ethically mined and natural (unheated), with exceptional clarity.
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The Fit: Currently a Size 7. This ring can be professionally resized up or down 2 sizes.
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The Vibe: Bold, timeless, and completely unique.
Why we love it: There is something so cool about the sharp, clean lines of an octagon cut paired with a full bezel setting. It feels substantial and deliberate—a true "forever" piece. The way the deep teal-blue shifts in the light makes it a perfect gift for a major milestone or a unique engagement choice. It’s a soulful piece built to be passed down through generations.
Care Tip from the Studio: To keep those geometric facets mirror-bright, we recommend a gentle clean with warm, soapy water and a soft-bristled brush every few weeks. This removes any buildup from daily life and ensures that deep blue-teal color pops every time the light hits it!
Shipping & Returns:
- In-stock items ship within 1-3 business days, unless stated otherwise above. Personalized pieces require an additional 1-3 days for processing/production. Our full shipping policy can be found here.
- Local to Doylestown, PA? Select local pick-up at check out to pick-up at our shop.
- Every Sarah Cornwell piece has a 30 day warranty for any defect.
- Changed your mind? Returns on full-price items are available for refund within 30 days of receipt. We do not accept returns on custom or personalized pieces. Our full return policy can be found here.
At Sarah Cornwell, we craft our jewelry with care and intention, using quality metals, gemstones and pearls designed for lasting beauty. Proper care will help your cherished pieces maintain their sparkle for years to come.
GENERAL CARE TIPS FOR ALL JEWELRY:
- When not being worn, store your jewelry in a dry, air-tight container.
- Minimize exposure to pools, saunas, and beaches. The minerals and chemicals in these environments can cause oxidation.
- It's best to avoid sunscreens, lotions, oils, soaps, shampoos, conditioners, body washes and perfumes while wearing your jewelry. The chemical additives in these products can affect the metal's finish.
- To prevent damage, remove your jewelry before working out or sleeping.
- Handle with Care: Be mindful when handling and storing your jewelry to avoid scratches or impacts.
For a more detailed review and tips on caring for specific metals, stones and pearls, please see our Jewelry Care Guide.
