46.45 Ct. Topaz from Brazil

This remarkable transparent bluish green topaz from Brazil is presented by The Natural Gemstone Company, weighing 46.45 carat, oval in outline, with dimensions of 23.50 by 19.40 by 13.60 mm. The gem displays a light color intensity, a fresh bluish green hue that reads as delicate and sophisticated under both natural and controlled lighting, and an eye clean clarity grade as evaluated at eye level, which ensures unobstructed visual appeal for the faceting to perform without internal interruption. The cutter selected a mixed brilliant cut to balance scintillation and color retention, and the piece carries an excellent polish that sharpens facet junctions and maximizes windowing control. The enhancement noted is heat treated, a standard and stable enhancement for topaz that improves color uniformity without materially affecting durability when properly set. The overall presentation is that of a large, high integrity topaz specimen, suitable for a central position in a high end jewelry creation or for collectors who prize well cut, sizable natural gems.

The mixed brilliant faceting of this oval topaz has been executed to merge the advantages of brilliant style crown facets with a modified pavilion arrangement that supports both return of white light and subtle color play. On the crown, the facet planes are proportioned to emphasize controlled scintillation, the table is sized to allow an even field of light without excessive windowing, and the crown angles have been chosen to marry flash with color saturation. The pavilion incorporates modified facet steps and precision break facets that stabilize the light paths, producing strong internal reflections and ribbon like flashes that travel with movement. Edge finishing is precise, and the excellent polish creates crisp facet boundaries, which in turn enhances apparent transparency and contrast. The oval outline has been carefully controlled to reduce bow tie effect, and the girdle appears consistent in thickness allowing secure setting without sacrificing aesthetic balance. In practical terms, the mixing of brilliant and step strategies yields a topaz that looks lively in motion, while maintaining a calming, even wash of bluish green color when viewed in stable lighting.

From a durability and care perspective, topaz occupies a distinct position on the Mohs hardness scale, registering at 8. This places it above common jewelry minerals such as quartz, which is 7, meaning it resists everyday scratching better than many semi precious stones, while being below corundum and diamond, which are 9 and 10 respectively. Buyers should therefore appreciate that the 46.45 carat topaz will withstand regular wear with reasonable care, but it is not impervious to abrasion by harder materials. More importantly, natural topaz has a pronounced perfect cleavage in one direction, which makes careful handling and secure mounting essential to prevent mechanical shock from producing cleavage planes or fractures. The heat treatment reported for this stone is stable, and does not imply susceptibility to light fading, however, precautions are advisable when applying extreme heat or force during resizing or manufacture. Recommended maintenance practices include routine warm soapy water cleaning and gentle brushing, with avoidance of harsh mechanical shock and consideration of professional ultrasonic or steam cleaning only after evaluation for internal tension or inclusions by a qualified gem technician.

For the informed buyer and collector, this 46.45 carat oval bluish green topaz from Brazil represents a rare combination of size, cutting intelligence, and optical purity. The specific gravity near 3.53 to 3.57 contributes to a satisfying heft in hand, while refractive index values around 1.61 to 1.64 and dispersion of approximately 0.014 account for the gem s particular balance of brilliance and restrained fire. Given these parameters, the stone is exceptionally well suited to bespoke settings that protect its cleavage edge while showcasing its large table and lively facet architecture, applications such as a protective bezel with articulated prongs or a high quality four claw configuration with shoulder guards. At The Natural Gemstone Company we can advise on setting strategies, commission imaging or video to evaluate behavior under your intended lighting, and arrange independent certification if required. This topaz is an outstanding candidate for a museum quality piece, a signature ring, or a bespoke pendant, and we are available to discuss mounting options, appraisal details, and shipping logistics to ensure that the stone retains its structural integrity and visual beauty for decades of enjoyment.