10.51 Ct. Topaz from Brazil

This exceptional sky blue topaz from Brazil weighs 10.51 carats, and measures 13.63 by 13.67 by 8.53 mm, and is cut in a round mixed brilliant style that balances table presence with strong pavilion facets to optimize return of light. The stone is transparent with a clarity grade of very very slightly included, evaluated at eye level, a level of clarity that is highly desirable in larger topaz because it preserves visual purity without the need for magnification. Color is described as medium intensity sky blue, a hue that presents a lively and natural appearance under standard daylight and artificial lighting, and the gem exhibits an excellent polish that enhances sparkle and facet definition. The stone has been enhanced by irradiation, a common and accepted treatment for producing stable sky blue tones in topaz, and the origin of the rough is Brazil, a source known for producing top quality material and consistent crystal habit. As specialists at The Natural Gemstone Company we fully disclose this enhancement and provide provenance information to support educated purchasing decisions.

From a connoisseur perspective this 10.51 carat sky blue topaz is notable for both size and color rarity, making it attractive for collectors and fine jewelry designers alike. Topaz in the sky blue range is commonly seen in smaller sizes or as pale material, so a well proportioned, round mixed brilliant weighing over 10 carats with medium color intensity and very very slight inclusions is uncommon in the market. The combination of substantial carat weight, precise cutting, strong polish, and transparent clarity increases the gemological and aesthetic value compared to similar stones that are either smaller, more heavily included, or less saturated in color. For buyers who prioritize factual grading criteria, the elements that drive value here are the stone weight, the clarity grade at eye level, the uniform medium color intensity, the quality of the mixed brilliant cut, and documented origin and treatment. The Natural Gemstone Company stands behind this topaz with clear disclosure and professional guidance, and we can advise on mounting options and return on aesthetic value for use in rings, pendants, or bespoke pieces where a rare, luminous sky blue of this size will make a distinct statement.