Montana Sapphire Elongated Octagon Ring
Description
The Montana Sapphire Elongated Octagon Ring | A Modern Heirloom
If you’re looking for a ring that blends ancient history with a sharp, modern aesthetic, this Elongated Octagon Montana Sapphire is it. 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 clean, geometric lines of this elongated octagon cut. The unique eight-sided silhouette offers a sophisticated, architectural vibe, showcasing a deep blue hue with those famous hints of teal. This piece features a partial bezel setting, a modern minimalist choice that secures the stone while allowing extra light to flood in through the sides, making the sapphire’s internal brilliance really pop.
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The Stone: A .76 carat Elongated 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 partial bezel—modern, minimalist, and designed to maximize light.
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The Origin: Ethically mined and natural (unheated), with high clarity.
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The Fit: Currently a Size 6. This ring can be professionally resized up or down 2 sizes.
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The Vibe: Architectural, sleek, and one-of-a-kind.
Why we love it: There is something so cool about the contrast between a stone formed millions of years ago and such a contemporary, geometric shape. The elongated octagon is incredibly elegant, and the partial bezel gives it a fresh, airy feel compared to traditional settings. It’s the perfect gift for someone who appreciates clean lines and rare, soulful gemstones.
Care Tip from the Studio: To keep those octagon facets mirror-bright, we recommend a gentle clean with warm, soapy water and a soft-bristled brush every few weeks. This ensures that those crisp, geometric lines and teal-blue flashes stay crystal clear!
When will I receive my order?
In stock items ship within 1-3 business days.
Personalized pieces require an additional 1-3 days for processing/production
Shipping times are in addition to processing/production times.
Please note that during holidays, additional time may be required for production and shipping.
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:
- Storage Matters: When not being worn, store your jewelry in a dry, air-tight container. A plastic bag is ideal for this purpose.
- Avoid Water Exposure: All jewelry is waterproof, but it’s not mineral or chemical proof. Minimize exposure to pools, saunas, and beaches. The minerals and chemicals in these environments can cause oxidation.
- Limit Contact with Products: It's best to avoid sunscreens, lotions, oils, soaps, shampoos, conditioners, body washes and perfumes. The chemical additives in these products can affect the metal's finish. It’s always best to remove your pieces if there is a possibility of coming into contact with any additives.
- Remove During Activity: To prevent damage, remove your jewelry before working out or sleeping.
- Handle with Care: Be mindful when handling 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.




