6.36 Ct. Bluish Green Prasiolite from Brazil

This specimen is a transparent 6.36 carat round bluish green prasiolite, with exact dimensions 11.94 by 11.92 by 8.15 millimeters, faceted in a mixed brilliant style, with an eye clean clarity grade evaluated at eye level, intense color intensity, and an excellent polish. The cutting approach preserves weight while maximizing optical performance, producing a balance of scintillation and depth of color that is characteristic of high quality prasiolite. The stone has been stabilized by irradiation to achieve and maintain its consistent bluish green hue, and it originates from Brazil. The mixed brilliant faceting, combined with precise pavilion depth and a controlled crown angle, yields a lively face up presence and a saturated tone that reads as intense without appearing dark under moderate light. The overall finish is free of windowing at the table, and facet junctions are sharp, reflecting exacting hand finishing and machine assisted symmetry control.

Technically the mixed brilliant design on this round prasiolite pairs a brilliant cut crown with a modified pavilion geometry to optimize light return for quartz, which has a refractive index near one point five four five. The measured depth of eight point fifteen millimeters against an average diameter of approximately eleven point nine three millimeters produces a depth percentage near sixty eight percent, a proportion that supports strong internal reflection and a pleasing balance between brilliance and color saturation. The facet architecture emphasizes small, well proportioned crown facets that increase scintillation, while the pavilion facets are configured to preserve weight and enhance color playback when viewed face up. The excellent polish minimizes light scattering at facet junctions, and the symmetry control maintains consistent facet alignment around the girdle, ensuring predictable behavior in metaled settings and under directional lighting. Given quartz dispersion characteristics, this cutting approach accentuates flashes of light and the stone exhibits controlled contrast and a lively table appearance.

From a custom jewelry perspective the dimensions and round outline make this prasiolite exceptionally versatile as a center stone, particularly for designs that require a bold visual anchor without excessive bulk. At roughly twelve millimeters across and six point three six carats, the gem sits comfortably as a dominant center in a cocktail ring, a solitaire pendant, or a bold halo composition where surrounding accent stones can enhance perceived color depth. The round geometry facilitates precision mounting, allowing jewelers to use classic four or six prong constructions for maximum light exposure, low profile bezel seats for contemporary secure designs, or a cathedral gallery that showcases pavilion faceting through openwork. The stone profile and firmness of quartz provide reliable seat tolerance for settings that require slight reaming or bezel forming during the final mounting stage, and its eye clean clarity means minimal risk of visible inclusions that would complicate orientation in the setting. Designers seeking contrast will find the bluish green tone responsive to warm gold alloys and to platinum for high contrast cool settings, giving flexibility in metal selection and design language.

The Natural Gemstone Company presents this prasiolite as a ready to set, high quality example suitable for bespoke commissions and studio level work, with full disclosure of enhancement and Brazilian origin. We source, inspect, and measure each piece under controlled lighting and magnification, confirming the eye clean grade at normal viewing distance and verifying polish and symmetry to ensure the stone requires minimal additional finishing prior to setting. As an irradiated prasiolite, the color is stable under normal wearing conditions, though standard precautions against prolonged high heat and harsh chemical exposure will protect the polish and overall appearance. For custom orders we can provide mounting recommendations, CAD friendly orientation photography, and detailed facet maps upon request to assist designers and bench craftsmen in achieving optimal fit and presentation. This prasiolite combines intentional cutting, robust size, and consistent color, making it an ideal centerpiece for a custom creation, and The Natural Gemstone Company is available to support design integration and secure delivery.