6.73 Ct. Topaz from Ceylon (Sri Lanka)

This 6.73 carat oval blue topaz is a precisely measured example of Ceylonian material, presented in dimensions 12.17 x 10.20 x 6.97 mm, with a calculated depth of 6.97 mm representing an overall depth ratio of approximately 62 percent relative to the mean diameter. The cutting style is a mixed brilliant cut, executed to marry the vivid scintillation potential of brilliant faceting with the controlled color saturation benefits of a modified pavilion. The crown is configured with a series of truncated star and kite facets that transition into a fine, tightly proportioned girdle and a pavilion that employs angular modified step facets. This combination produces strong return of light to the eye, creating lively facet contrast and measurable scintillation across the oval surface, while preserving body color in the larger planes. Clarity is graded as very very slightly included when evaluated at eye level, the inclusions are minimal and localized, and the stone presents as effectively eye clean in standard viewing. The polish is excellent, executed to yield mirror finishes on facet junctions and crisp facet edges, which enhances brilliance and contributes to consistent light leakage control. The color intensity is described as intense, a pure and saturated mid to vivid blue that displays even distribution without noticeable zoning, and the stone has been enhanced by controlled irradiation, a stable treatment widely used to produce the bright blue tones associated with high quality topaz, the piece originating from Ceylon, Sri Lanka, an established source for topaz rough with clean crystalline habit.

From a romantic provenance perspective the vivid blue of this topaz evokes the lagoon tones and coastal skies that define certain Ceylonese landscapes, a color that reads as both emblem and memory. Imagine a jewel gathered from a miner who watched the Indian Ocean light shift across a ceylon hill, worked by a cutter who balanced brilliance with retention of a deep oceanic hue, creating an object that holds within it a small geography of place and atmosphere. The clarity plays a part in that narrative, the very very slight internal features acting as signatures rather than flaws, tiny islands of crystallization that catch the light in a way that resembles first glints on water, a reminder that fidelity is not absence of mark but the presence of honesty. In intimate settings this blue topaz becomes a token of promises made by the sea, a stone to present at dusk, when blue deepens into evening and the stone sings with internal fire, conveying both the technical mastery of lapidary craft and the human warmth of a story tied to landscape and vow.

For designers and collectors, this gem responds well to a number of setting approaches, each choice amplifying different aspects of its performance. A minimally bezel restrained profile with four or six prongs in platinum or white gold will accentuate the cool intense blue and maximize light entry through the crown, preserving the strong scintillation produced by the mixed brilliant arrangement. A low halo of small white diamonds will increase perceived size while providing contrast that emphasizes the purity of the blue, while a warm yellow gold mounting will introduce a subtle complementary contrast that deepens the perceived saturation. Given the depth ratio and weight distribution, the stone is well suited to an elegant ring setting or a substantial pendant where pavilion clearance and secure girdle seating can be achieved. Care considerations include understanding that the color has been achieved by irradiation, a stable enhancement that is resistant to ordinary wear, but it is advisable to avoid extreme heat exposure and aggressive thermal shock that could alter color stability. Topaz rates high on the hardness scale but can exhibit perfect cleavage along certain planes, so secure settings that protect exposed edges are recommended. The Natural Gemstone Company stands behind the provenance and craftsmanship of this piece, and we can provide detailed imagery, additional angles, and certification documentation on request. For bespoke design consultation, logistics of shipping, or technical photomicrographs for appraisal, please contact our gem specialists who will be pleased to assist with mounting recommendations, certification options, and to arrange viewing under standardized lighting conditions.