25.17 Ct. Swiss Blue Topaz from Brazil

This exceptional marquise shape Swiss blue topaz, weighing 25.17 carats, is a rare offering from The Natural Gemstone Company, a stone that arrives as a completed center of gravity for an exclusive custom creation. Measuring 33.20 x 12.70 x 8.70 mm, its elongated silhouette is immediately striking, and its mixed brilliant cut has been executed to maximize scintillation across the entire surface. The color reads as a clean Swiss blue with medium intensity, a tone that reads vibrant yet refined under natural light. Clarity is graded as very very slightly included when evaluated at eye level, a testament to the gemstone s inherent transparency and internal cleanliness, and the excellent polish contributes to crisp light return and a glass like finish on every facet. The stone has been enhanced by irradiation, a stable and recognized treatment for topaz that brings out the vivid blue hue, and it originates from Brazil, a source known for producing specimens of both beauty and character. Only a handful of topaz of this size and marquise form pass through the market each season, making this piece an opportunity for collectors and connoisseurs who value rarity and provenance.

Its dimensions and shape are the reasons this topaz is ideally suited for bespoke jewelry, a true centerpiece that demands a custom setting rather than an off the shelf mount. The marquise silhouette creates visual length, flattering in rings by elongating the finger, and commanding in pendants where the pointed ends draw the eye vertically for a dramatic, elegant profile. At 33.20 mm in length and 12.70 mm across, the stone sits large enough to define high jewelry designs, yet its narrow profile and 8.70 mm depth allow for balanced integration into settings that protect the pointed ends. Our master designers recommend custom prong or partial bezel solutions to safeguard the points while allowing maximum light penetration to take full advantage of the mixed brilliant cut. This topaz adapts beautifully to a variety of design languages, from modern solitaire rings with understated rails, to vintage inspired halos that amplify presence with diamond pavé, to asymmetrical couture pieces that pair it with sapphires or warm gold accents for contrast. The medium color intensity makes it versatile for white platinum settings that emphasize icy clarity, and for warm yellow gold that enhances its Mediterranean blue personality.

Commissioning a design around this single available specimen becomes an act of joining a very small circle of owners who possess truly singular gemstones. At The Natural Gemstone Company we offer a full bespoke service built around the stone s dimensions and optical character, from one on one consultations and design sketches to digital renderings and tailored setting recommendations. We work with experienced bench jewelers who understand how to balance a marquise of this scale, how to secure the points, how to choose metal thickness and prong geometry so the piece wears confidently while optimizing brilliance. We will provide detailed documentation of the gem s attributes, including weight, exact measurements, cut description, clarity assessment as very very slightly included at eye level, color intensity classification as medium, polish grading as excellent, the irradiation enhancement disclosure, and origin as Brazil, so that your custom work is supported by transparent provenance. For collectors seeking exclusivity, this topaz is a rare canvas for expression, a stone that will serve as the signature element of an heirloom piece, a museum caliber focal point, or a bold symbol of discernment. Contact The Natural Gemstone Company to reserve a private viewing or to begin the bespoke design conversation, and let us guide you through transforming this exceptional marquise Swiss blue topaz into a one of a kind jewel that few will ever have the privilege to own.