4.46 Ct. Bluish Green Prasiolite from Brazil

This exceptional prasiolite offered by The Natural Gemstone Company is a transparent 4.46 carat oval, measuring 12.30 x 9.98 x 6.41 mm, with a bluish green hue that reads as intense and highly attractive to a practiced eye. The stone is faceted with a mixed brilliant cut, combining the best attributes of brilliant facet geometry and strategic pavilion shaping to optimize both face up presence and internal light performance. The piece displays an excellent polish that allows for crisp facet junctions and minimal surface diffusion, which enhances the stone body color and the clarity impression. This prasiolite has been treated by irradiation, a stable and widely accepted enhancement that transforms green tones in quartz while maintaining long term color stability, and the origin is Brazil, a source known for producing clean, attractive quartz material with good crystal structure. For the buyer who values provenance and technical clarity, these parameters together define a gem that is transparent, well cut, and responsibly treated, with the size and color intensity that make it suitable for both statement jewelry and high end collections.

On the subject of clarity and cutting, this prasiolite is graded as very very slightly included, evaluated at eye level, which means the stone appears clean to the unaided eye and any inclusions are minute, localized, and do not interfere with the pathway of light through the gem. In practical terms this produces very high light return and an open window into the bluish green body color, without the haziness or veiling that can occur in lower clarity examples. The mixed brilliant cut is purposefully chosen to marry scintillation with broad flash, the crown facets dispersing light into attractive flashes, while the pavilion geometry returns light efficiently to the table. The excellent polish further contributes to the gem essence, ensuring that light is reflected with minimal surface scattering, an important quality for an educated buyer assessing both optical performance and finishing craftsmanship. The proportions and the depth of 6.41 mm are well balanced for the given oval length and width, yielding a pleasing table presence and a strong face up weight distribution that emphasizes color saturation, which is especially notable in a gemstone of this size.

When comparing reflective qualities to other gemstones in its category, it helps to consider refractive index, dispersion, pleochroism, and typical inclusion patterns. Quartz species, which include prasiolite, have a refractive index around 1.54 to 1.55, and a low dispersion. This means that compared with higher index and higher dispersion gems such as sapphire or tourmaline, prasiolite produces a softer, glasslike brilliance rather than intense fire or sharp pinprick scintillation. Against beryl family stones like aquamarine and emerald, quartz often displays more even color distribution and a cleaner face up appearance because it is less prone to the significant inclusions that commonly occur in emeralds. Compared with green tourmaline, which can show strong pleochroism, this prasiolite offers a more uniform bluish green tone regardless of orientation, simplifying setting choices and color matching in jewelry. In direct comparison to peridot, which tends to show higher dispersion and a yellowish green cast, this prasiolite reads cooler and more blue leaning, and its polished mixed brilliant cut delivers broader flashes rather than the tight scintillation peridot can show. The result is a gem whose reflective signature is elegant and refined, with bright, broad light return and a glassy lustre, making it particularly appealing for buyers who want a luminous, color rich green quartz rather than the highly fiery or highly pleochroic behavior of other green gem species.

For the informed buyer considering value, this 4.46 carat Brazilian prasiolite represents a rare combination of size, intense color, and excellent cutting. Large, clean prasiolite crystals with saturated bluish green tones are uncommon, and the irradiation enhancement used here is an industry standard that stabilizes the attractive green while preserving clarity and structure, an important consideration when comparing to less stable color treatments in other materials. The stone’s hardness around 7 on the Mohs scale offers solid daily wearability with normal care, though it is advisable to avoid sharp knocks and abrasive surfaces as with any faceted quartz. From an investment and design standpoint, this gem holds strong appeal because it offers an elevated color and finish at a price point that undercuts higher index green gemstones while delivering a look of refinement. The Natural Gemstone Company stands behind its gemstones with transparent disclosure of treatments, origin, and grading observations, and we are pleased to provide supplementary images, a certificate from an independent laboratory when requested, and guidance on custom mounting to showcase the stone’s optical properties. If you seek a distinctive bluish green prasiolite with excellent polish, an artful mixed brilliant cut, and a clean, intense appearance that photographs and wears beautifully, this 4.46 carat oval is an outstanding candidate.