1.70 Ct. Cobalt Spinel from Tanzania

When you are searching for a gemstone that completes a promise, or a rare treasure that elevates a collection, you are looking for more than carat weight and color. You want a story, a presence, and a piece that feels inevitable the moment you see it. At The Natural Gemstone Company we listen to those quiet requirements, and we present items that fulfill them. This beautiful transparent 1.70 carat oval blue cobalt spinel answers both the romantic and the practical needs a thoughtful buyer brings. It is substantial enough to anchor an engagement ring, refined enough to be set as a pendant that draws the eye, and rare enough to satisfy a collector who prizes provenance and natural beauty. If your priority is a gemstone that offers intense, honest color, excellent polish, and the integrity of no enhancement, this spinel is designed for you, and we are here to make it effortless to imagine it on the hand or as the centerpiece of a custom design.

Take a moment to consider the details, because they tell the true story of value and wearability. This stone weighs 1.70 carat and measures 7.77 by 6.31 by 4.35 millimeters, a graceful oval that sits comfortably in classic and modern settings. The mixed brilliant cut maximizes fire and scintillation while preserving the stone shape that flatters most fingers and jewelry silhouettes. Graded as very slightly included when evaluated at eye level, the clarity of this spinel means that the inclusions are minimal and do not distract from the gems depth and sparkle in ordinary wear. The color intensity is intense, a hallmark of cobalt rich spinels that produce the pure, saturated blue collectors and engagement buyers crave. The polish has been executed to an excellent standard, ensuring smooth, bright facets and optimal light return. Importantly, this spinel is natural and untreated, with no enhancement, and it originates from Tanzania, a source known for producing some of the most vibrant cobalt spinels in the world.

There is a romantic thread woven into the very hue of this spinel, and that is part of why gemstones speak to the heart the way they do. Imagine the cobalt blue of a twilight sea, where the sky and water exchange secrets and every moment feels full of possibility. This stone evokes that hour between day and night, when vows become promises and promises become stories told late into life. The clarity of the gem, very slightly included to the eye, contributes a gentle honesty, a reminder that true beauty carries a trace of the earth that formed it. For an engagement ring, it becomes a symbol of deep feeling tempered by reality, brilliant and resilient yet grounded. For the collector, it represents a moment of geological precision, a crystallized memory of Tanzanian soil and heat and time. Wearing this spinel invites quiet conversation, a glance that starts with color and ends with discovery, and because it is untreated, it carries the narrative of nature rather than human alteration.

If you are ready to make this gem the solution to your search, The Natural Gemstone Company stands ready to assist with personal guidance on settings, metal choice, and proportions that will flatter the oval 7.77 by 6.31 millimeter outline. For an engagement ring many customers choose a low to medium bezel or a classic four prong setting to showcase the mixed brilliant facets and allow light to return freely, while protecting the stone in daily wear. Collectors often appreciate a well lit display or a simple solitaire mount to observe the play of color under different lights. We can provide additional high resolution images, secure shipping, and insured delivery, along with care instructions to preserve the excellent polish and intense color that make this gem so compelling. Reach out to our gem specialists and we will walk you through certification, custom design, and any questions about the Tanzanian origin and the no enhancement status. Your search for an honest, emotionally resonant, and beautifully finished blue cobalt spinel can end here, with confidence and delight.