6.48 Ct. Bluish Green Prasiolite from Brazil

This transparent bluish green prasiolite, presented by The Natural Gemstone Company, weighs 6.48 carats and is cut into an elegant oval shape with precise dimensions of 13.49 x 10.75 x 7.70 millimeters. The gem exhibits a vivid, intense color intensity that is evenly distributed across the table and girdle. Originating from Brazil, this prasiolite has been enhanced through irradiation, a commonly applied treatment to achieve and stabilize the green hue in quartz. The material is eye clean when evaluated at normal viewing distance, and the cutting style is faceted with a mixed brilliant cut, combining a faceted crown and a pavilion designed to balance fire, brilliance, and overall light performance. The excellent polish contributes to a sharp, glassy facet interface, enhancing the stone’s visual clarity and surface luster.

The geometric faceting of this mixed brilliant cut is engineered to maximize the interaction between incident light and the internal optical structure of the prasiolite. The crown is composed of precisely proportioned facets that refract and disperse incoming light toward the pavilion, where a complementary arrangement of pavilion facets redirects that light back through the table and crown, creating a vivid display of brilliance and scintillation. The mixed design integrates both step like facet rows and triangular kite shaped facets typical of brilliant cutting, yielding a controlled balance of broad flash and lively pinpoint scintillation. Facet junctions are keen and symmetrical, producing predictable light return across viewing angles, and the oval outline enhances the perception of size while maintaining optical symmetry that supports even light distribution.

Clarity and polish work in concert with the faceting geometry to permit unimpeded light travel throughout the stone. With an eye clean clarity grade, the body of the prasiolite contains no inclusions that interfere with light reflection at normal viewing distances, so the cut can perform to its designed optical potential. The excellent polish ensures that facet planes function as efficient mirrors, minimizing light scatter at the surface and reinforcing strong contrast between light and dark facet areas. The intense bluish green tone benefits from the mixed brilliant architecture, appearing saturated yet lively under a variety of lighting conditions due to effective light return and internal reflection. Because the color is the result of irradiation, the stone’s color stability is generally reliable under standard wear conditions, though exposure to high temperatures or strong, prolonged heat sources can alter or fade the induced color.

For technical reference and procurement considerations, the gemstone is supplied with full disclosure of its irradiated enhancement and Brazilian origin, and it is suitable for use in settings that allow maximum light exposure, such as open backed or elevated mountings, to take full advantage of the engineered faceting. The oval dimensions of 13.49 by 10.75 millimeters and a depth of 7.70 millimeters provide a profile that works well in rings, pendants, and bespoke pieces where optical performance and perceived size are priorities. The Natural Gemstone Company provides detailed documentation on request, including grading observations and treatment disclosure, to assist in design decisions and care considerations.