6.23 Ct. Bluish Green Prasiolite from Brazil

This specimen is a transparent bluish green prasiolite weighing 6.23 carat, presented in a round shape with dimensions 11.88 x 12.24 x 8.23 mm, faceted to a mixed brilliant model to harmonize optical return with color saturation. The cutter balanced a classic brilliant crown with a stepped pavilion arrangement to create defined scintillation patterns and a strong, centralized star phenomenon visible through the table. Proportions yield a depth that measures approximately sixty eight percent of the average girdle diameter, a ratio chosen to retain body color while promoting lively facet contrast under varied lighting. Clarity was evaluated at eye level and graded eye clean, the material exhibiting no inclusions that interrupt a clean visual plane, which allows the prasiolite to show even tone and internal clarity across the stone. Color intensity sits at a medium grade, a stable bluish green that changes subtly with angle and light temperature, and the polish was executed to an excellent level, delivering crisp facet junctions, mirror like facet planes, and minimal surface disturbance that enhances both brilliance and luster.

The journey of this prasiolite began in the quartz rich pegmatite fields of Brazil, sourced through established local contacts and selected for homogeneity of crystal form and internal clarity. Brazilian rough was inspected on arrival for zoning, strain lines, and natural color distribution, then sawn and preformed with attention to preserving the most saturated material toward the crown. This particular prasiolite is heat treated, a controlled thermal process commonly applied to select amethyst and green quartz to stabilize and develop the bluish green hue, the treatment carried out using calibrated temperature ramps and hold cycles to avoid fracturing or undue strain. After heat treatment, the rough was re examined to map the best orientation for a mixed brilliant cut, the lapidary choosing a slightly larger table facet to emphasize the central star while retaining enough pavilion depth to prevent the stone from appearing washed out in daylight. Cutting employed precise index positioning, strict control of pavilion angles for consistent return, and a fine graduated girdle to eliminate light leakage without compromising setting security. Final buffing and polishing used progressively finer laps and diamond slurries to achieve an excellent polish grade, assuring crisp facet intersections and an even, reflective surface.

At The Natural Gemstone Company we track each step from rough acquisition to final grading, and this prasiolite passed a comprehensive quality control protocol that includes visual appraisal under standard illumination, measurement and weight verification, and documentation of enhancement history. The material characteristics of quartz, with a refractive index around 1.544 to 1.553 and a specific gravity near 2.65, mean that this stone offers elegant brilliance with restrained dispersion, delivering a clean, sophisticated flash rather than fiery fire. For jewelry application the mixed brilliant design offers versatility, sitting attractively in solitaire or halo ring interpretations, as a center for a pendant where the central star and depth can be showcased, or in vintage inspired settings that emphasize color contrast. For mounting we recommend designs that protect the girdle and allow light to enter through the crown, settings in white precious metals will enhance the bluish notes, while warmer alloys will bring forward the green facets, the choice guided by desired visual emphasis. The Natural Gemstone Company supplies this prasiolite with a full description of its origin, enhancement status, dimensions, weight, and clarity assessment, enabling confident selection by knowledgeable buyers who value technical transparency and refined lapidary craftsmanship.