6.76 Ct. Bluish Green Prasiolite from Brazil

This specimen is a transparent, round shaped prasiolite weighing 6.76 carat, with exact dimensions of 12.44 by 12.44 by 8.19 millimeters, originating from Brazil and presented by The Natural Gemstone Company. The cutting style is faceted, executed as a mixed brilliant cut with an emphasis on geometric precision to maximize internal light travel and surface return. The color presents as an intense bluish green, the result of controlled irradiation enhancement, applied to stabilize and saturate the hue without compromising transparency. The stone is graded as very slightly included at eye level, indicating minimal native or treatment related features that remain unobtrusive to the overall appearance. An excellent polish and meticulous symmetry are evident across the entire crown and pavilion planes, producing crisp facet junctions and mirror like facet faces that are fundamental to the performance described in the following technical appraisal.

From a cutting and light performance perspective this round prasiolite demonstrates a deliberate geometric strategy. The gem exhibits a mixed brilliant architecture in which a brilliant style crown with a central table, star facets, bezel facets, and upper girdle facets is paired with a step influenced pavilion geometry. This hybrid approach optimizes both scintillation and color depth, allowing the crown to fracture incoming light into lively flashes while the pavilion steps act as controlled planes for color reinforcement and return. The proportions of this gem reveal a total depth of 8.19 millimeters on a diameter of 12.44 millimeters, representing an approximate depth ratio of 66 percent. This depth fall favors stronger face up color saturation and a deeper, more luminous girdle to pavilion interaction. The cutter has balanced table size against pavilion depth to maintain both brilliance and even color distribution, avoiding excessive table dominance that would flatten the visual depth, and avoiding overly shallow pavilions that would dilute the intense bluish green. Facet geometry is executed with consistent angles and symmetry to produce predictable optical return patterns, vigorous scintillation across movement, and controlled flash patterns that change with viewing angle, all of which are signatures of high level craftsmanship.

Clarity and optical character of this prasiolite further support its suitability for premium jewelry applications. The very slightly included eye level grade denotes small inclusions that are typically confined to discrete locations and do not form networks that disrupt light transmission or compromise structural integrity. Because quartz has a relatively robust crystal lattice and prasiolite produced by irradiation is stable under normal wear and domestic lighting conditions, the visual performance remains reliable in everyday settings. Color is intensely saturated and evenly distributed across the stone, showing minimal zoning or patchiness. Under direct lighting the mixed brilliant geometry creates energetic white light flashes, while under softer ambient illumination the mass color reads as a rich bluish green with subtle internal glow. The irradiation enhancement has been performed to produce a stable chromophore state, and the resulting hue interacts favorably with the facet design to maximize perceived depth without introducing undesired color halos or banding.

For the client seeking a technically refined gemstone, this prasiolite is ideal for bezel and prong settings where secure metal work can accentuate the round silhouette and allow light ingress from both crown and pavilion. The combination of excellent polish, precise facet junctions, and mixed brilliant planning yields a gem that photographs with controlled brilliance and presents a dense, lively face up color in hand. The Natural Gemstone Company stands ready to provide additional information on mounting recommendations, secure shipping, and certification of origin and enhancement. This gem will appeal to connoisseurs who prioritize measured cutting decisions, predictable optical behavior, and a saturated bluish green color derived from high quality Brazilian rough that has been sensitively enhanced and expertly finished.