8.92 Ct. Topaz from Ceylon (Sri Lanka)

This exceptional Swiss blue topaz offered by The Natural Gemstone Company is a rare and notable example in both size and color, weighing 8.92 carats with precise dimensions of 12.13 x 12.00 x 8.09 millimeters. The gem is fashioned in a round shape with a mixed brilliant cut, combining a brilliant style crown and a faceted pavilion to maximize both scintillation and visual depth. Clarity is graded as very slightly included when evaluated at eye level, which means the stone appears essentially eye clean for most viewers while retaining minor natural features that authenticate its natural origin. Color is described as intense, with a vivid Swiss blue tone that is evenly distributed across the table and facets, and the surface finish is of excellent polish which enhances light return and brilliance. The gem has been enhanced by irradiation, a standard and stable treatment for producing blue hues in topaz, and its reported origin is Ceylon, known for producing high quality gemstones.

From a gemological perspective this topaz stands out for multiple reasons that matter to an educated buyer. First, a round topaz approaching nine carats is uncommon because cutters generally prefer elongated shapes to maximize yield from rough material, so a well proportioned round of this weight is rare and commands premium interest. Second, the intense Swiss blue color at this size is less frequently encountered, since large topaz crystals that take on saturated hues are not as common as lighter toned or pale specimens. Topaz has a refractive index range near 1.61 to 1.64 and a hardness of 8 on the Mohs scale, making it relatively durable for daily wear when set appropriately. Buyers should note that topaz has perfect cleavage along one plane, which requires careful setting and handling to avoid sharp impacts that could cause breakage. The mixed brilliant cut on this stone has been executed to balance depth and table proportions, producing strong facet contrast and lively brilliance despite the gem having a deeper pavilion depth of 8.09 millimeters, which in this case contributes to the perceived saturation and depth of the intense blue color.

Treatment and provenance are important factors in valuation and long term desirability, and this gem is transparent about both. Irradiation is the enhancement used to achieve the Swiss blue shade, a common, accepted, and industry stable treatment that yields vivid blues when applied to colorless or pale yellow topaz, and when followed by controlled post irradiation practices it remains color stable under normal wear and light conditions. A cautious buyer should avoid prolonged exposure to extreme heat sources, and should avoid steam cleaners and ultrasonic baths that could stress the stone and its setting, while gentle cleaning with warm water, mild soap, and a soft brush will maintain its brilliance. The Ceylon origin enhances the gemstone narrative, because Sri Lanka has a long standing reputation for producing fine gem material and responsible sourcing practices, and provenance from Ceylon can add collectible appeal for connoisseurs who value documented origin. For use in jewelry this stone is an outstanding candidate for a solitaire ring or a statement pendant, where its dimensions and intense hue will serve as a dramatic focal point without appearing bulky, and it will perform well when securely bezel or prong set by an experienced jeweler.

As The Natural Gemstone Company we present this Swiss blue topaz to buyers who appreciate objective gemological attributes combined with visual impact, rarity of form, and clear disclosure of enhancement and origin. The combination of near nine carat weight, round mixed brilliant cutting, eye level very slightly included clarity, intense Swiss blue color, excellent polish, irradiation treatment, and Ceylon provenance creates a profile that is uncommon in the market, appealing to collectors, designers, and discerning clients who seek a large, vivid, and well cut topaz with trustworthy documentation. If you are considering a centerpiece gem that blends visual drama with technical quality and transparent treatment disclosure, this topaz represents a rare opportunity to acquire a notable example, and our team at The Natural Gemstone Company is available to provide additional measurements, close up imaging, and guidance on setting and care to ensure the stone performs beautifully for generations.