17.28 Ct. Cabochon Tanzanite from Tanzania

One look at this striking 17.28 carat violet tanzanite and you understand why collectors and designers return to tanzanite when they want a statement stone that also works in wearable jewellery. This gem measures 13.25 by 13.44 by 10.36 millimetres, and is fashioned as a round cabochon, a shape and cut that emphasizes the gem s translucent body tone and intense color intensity rather than brilliance. Evaluated at eye level the clarity is graded included, which in a stone of this size contributes character and a luminous depth rather than detracting from its presence. The surface has been given an excellent polish so the dome reads with a satiny sheen that shows off the violet to bluish violet hues that tanzanite is celebrated for. This piece is heat treated, the standard and stable enhancement used across the trade to reveal tanzanite s signature colors, and it is sourced from Tanzania, the single origin that produces true tanzanite, which makes this gem not only beautiful but also authentic and regionally specific.

When customers ask about durability for everyday wear many gem types must be balanced between hardness, toughness, and how they are cut and set. Tanzanite rates around six to seven on the Mohs scale which means it is softer than corundum varieties like sapphire and ruby, but it is entirely wearable when mounted thoughtfully. The cabochon cut on this 17.28 carat round tanzanite is a deliberate advantage for daily wear compared with faceted cuts, because the smooth dome reduces sharp edges and facets that can catch and chip. The excellent polish further minimizes microabrasion, giving the surface a resilient, attractive finish. Compared with popular daily wear gems such as quartz or amethyst this tanzanite offers a richer, rarer color and a larger presence while performing similarly when cared for properly. For the best longevity we recommend bezel or channel settings that cradle the cabochon and shield its girdle, and advise avoiding hard knocks, rough gardening, and extreme heat exposure. Routine cleaning with lukewarm water, a mild detergent, and a soft brush will maintain its luster, and professional re-polishing can be undertaken if the stone ever shows minor surface wear. Heat treatment applied at the mine and stabilized during cutting is a permanent enhancement, so the color you see is the color that will remain with ordinary wear.

Value and uniqueness are where this tanzanite excels when compared to other offerings on the market, and The Natural Gemstone Company is proud to present it as a superior choice for both designers and discerning buyers. Large, translucent tanzanites above 10 carats with intense color are uncommon, and the combination of a substantial 17.28 carat weight, round dimensions of 13.25 by 13.44 by 10.36 millimetres, an excellent polish and the cabochon cut produces a gem that reads larger and more luminous than many faceted stones of similar carat weight. Versus similar sized sapphires or emeralds, this tanzanite gives a unique violet presence that is rarer and carries a distinctive market appeal at a more accessible price point than many corundum or beryl gems. The included clarity should be viewed through the lens of character and translucency rather than as a flaw, because the internal features help scatter light in ways that deepen color saturation in a cabochon and create a silky, internal glow. Finally The Natural Gemstone Company guarantees responsible sourcing from Tanzania and transparent disclosure of treatments, so you receive museum quality color and provenance without guesswork. If you seek a daily wearable piece that balances rarity, color intensity, and practical durability, this 17.28 carat round violet tanzanite is a superior option that stands out from the crowd, and our team is ready to advise on the optimal setting and care to keep it beautiful for years of everyday enjoyment.