25.17 Ct. Swiss Blue Topaz from Brazil

This entry presents a single, transparent, marquise shape Swiss blue topaz, weighing 25.17 carat, with dimensions of 33.20 x 12.70 x 8.70 mm. The specimen exhibits a medium color intensity, presenting a rich, bold blue that functions as a clear visual statement, and a color character that is frequently associated with personal power and distinction. The material originates from Brazil, a well established source for topaz crystals, and has undergone irradiation enhancement to achieve and stabilize its vivid blue hue. The combination of size and color intensity in this stone positions it within a category of gemstones that are suitable for prominent pendant or cocktail ring applications, and the marquise outline affords an elongated visual profile that complements linear design, while also providing a secure and practical shape for a variety of mounting approaches.

The cutting style is a mixed brilliant cut, executed to optimize both face up spread and internal light performance, producing balanced scintillation and a steady blue saturation across the facet pattern. The clarity has been evaluated as very very slightly included at eye level, meaning that under standard viewing conditions the stone appears clean and free of significant inclusions, while minor natural features are present under magnification or close inspection. The polish has been assessed as excellent, reflecting precision in lapidary finishing and resulting in crisp facet junctions and a smooth surface that enhances the optical transmission and the perceived depth of the blue tone. In practical terms the cut and polish work together to maximize light return and to maintain a uniform visual density, which supports the stone as a focal element in refined jewelry compositions.

From a gemological and practical standpoint the topaz offers a combination of attributes that inform both design decisions and long term care. Topaz is known for a relatively high hardness, which provides good resistance to daily wear when properly set, and the substantial carat weight and measurements of this stone offer versatility for single stone settings as well as more complex multi stone arrangements. Because the color is the result of irradiation enhancement, routine care recommendations include minimizing extended exposure to high heat, and advising that any subsequent treatments be disclosed to service professionals. The medium color intensity and marquise format allow for efficient use of the material in settings that emphasize the length and color saturation, and the transparent nature combined with the mixed brilliant cutting style supports secure bezel or prong mounting depending on the design language desired by the client.

The Natural Gemstone Company provides this Swiss blue topaz as part of a curated selection of natural and treated gemstones, with provenance and treatment information disclosed for each item. Documentation regarding weight, measurements, shape, cut type, clarity grade, polish rating, color intensity, enhancement type, and origin accompanies the stone, and is available to clients to support appraisal and insurance processes. In summary the stone presents a notable balance of substantial carat weight, precise cutting, and a rich blue color that conveys a sense of personal power and distinction, while retaining the clarity and polish attributes sought for high quality jewelry work, and practical considerations regarding treatment and care are stated to ensure informed decisions by designers and collectors.