17.70 Ct. Blue Topaz from Brazil

This 17.70 carat transparent blue topaz presents as a precision cut trillion, with well measured dimensions of 18.17 x 17.01 x 11.20 mm, yielding a depth ratio of approximately 63.6 percent. The trillion cut employs a triangular brilliant faceting strategy that concentrates light return toward the table, producing defined scintillation from each apex and along the girdle planes. The medium color intensity manifests as an even, ice to cornflower blue that remains consistent across viewing angles, and the eye clean clarity grade, evaluated at eye level, means that the stone is free of visually disruptive inclusions when set in open style jewelry. The surface finish is described as excellent polish, which ensures crisp facet junctions and minimal surface disturbance to light transmission. This specimen has been enhanced by irradiation, a stable and industry standard treatment for blue topaz, and it is sourced from Brazil, a locality known for producing clean, well colored material. These technical characteristics make it straightforward for a lapidary to match the stone to a precision setting, and they provide buyers a clear sense of the cutting and finishing standards applied by The Natural Gemstone Company.

As a gift for someone special, this blue topaz commands presence without appearing oversized, its substantial 17.70 carat weight combined with the acute geometry of the trillion shape yields dramatic face up area and a sculptural silhouette suitable for a signature pendant or an elegant cocktail ring. The triangular brilliant faceting maximizes flash and contrast, allowing each movement to reveal new planes of blue, making the piece striking in natural daylight and under evening light alike. For the discerning recipient who values technical excellence, the gem is ready for a bespoke mounting that highlights its table and apex symmetry, while the eye clean clarity permits open prong or bezel interpretations without concern for hidden inclusions. Care recommendations include avoiding excessive heat and aggressive chemicals to preserve color integrity and polish. The Natural Gemstone Company stands behind this topaz with provenance information and detailed measurements, offering an exceptional and technically superb gemstone that reads as both a considered investment and a memorable gift.