5.89 Ct. Bluish Green Prasiolite from Brazil

This listing presents a single transparent bluish green prasiolite weighing 5.89 carat, supplied by The Natural Gemstone Company. The gem is fashioned in a round shape with dimensions of 11.34 by 11.45 by 8.50 millimeters, and it has been cut in a faceted style using a mixed brilliant cut. The stone exhibits an intense color intensity that reads as a rich bluish green across the crown and pavilion, with an excellent polish that supports strong light return and a clean visual presentation. Clarity is evaluated as eye clean at standard viewing distance, and the material has been heat treated as an enhancement to stabilize and intensify the hue. The prasiolite originates from Brazil, a region known for producing consistently fine quartz varieties that respond well to controlled heat treatment to achieve desirable green tones.

The weight of 5.89 carat is a defining characteristic of this specimen and materially contributes to its market value and relative scarcity. Prasiolite is a variety of quartz that occurs less frequently in larger, gem quality sizes with saturated color and clean clarity. When a prasiolite reaches the near six carat range, it moves beyond common parcel sizes and into a size category that is sought after for single stone jewelry pieces and boutique cuttings. The physical dimensions of 11.34 by 11.45 millimeters provide a generous face up area that emphasizes the gem presence on a ring or pendant, while the 8.50 millimeter depth supports the mixed brilliant faceting geometry. Because gem pricing for colored stones often increases at a greater than linear rate with carat weight, the incremental value contributed by the size of this 5.89 carat example is meaningful. The combination of weight, saturated color, and eye clean clarity makes this prasiolite less available than smaller, commercially matched stones, and that relative scarcity is reflected in long term collectability and suitability for special occasion settings.

The mixed brilliant cut applied to this round prasiolite is chosen to balance scintillation with depth of color, and the excellent polish ensures that facet junctions and table clarity remain crisp under magnification. Mixed brilliant cutting uses a crown with brilliant style facets and a pavilion with modified facets to control light leakage and enhance return, which is particularly effective in a stone that exhibits intense color. With eye clean clarity the gem presents minimal internal distraction at normal viewing distance, allowing the vivid bluish green tone to dominate the visual field. Heat treatment is a widely accepted practice for prasiolite, where controlled heating converts iron bearing amethyst or green quartz into stable green tones. The treatment for this piece has been applied in a manner consistent with industry standards, resulting in a stable color that maintains tone and saturation under typical wear conditions. Origin from Brazil is notable because Brazilian prasiolite tends to display an evenness of color and clarity that facilitates high quality cutting, and provenance from established localities supports consistent supply documentation.

Practical considerations for use and care are straightforward, reflecting the intrinsic properties of quartz based materials. Prasiolite has a Mohs hardness of seven, which affords good resistance to everyday abrasion, while still benefiting from prudent protection against sharp impacts and hard knocks. The substantial 5.89 carat weight and generous diameter make this gem well suited to solitaire rings, statement pendants, and bespoke jewelry designs where a single central stone is the focal element. Given the eye clean clarity and excellent polish, minimal additional treatment is required to present the stone attractively in open settings that maximize light exposure. Routine care can be performed with warm soapy water and a soft brush, avoiding prolonged exposure to strong acids or high heat conditions that are outside normal wear. For secure mounting recommendations, the slightly deeper pavilion suggests that bezel or prong settings designed to protect the girdle while permitting ample table exposure will best balance protection with optical performance.

The Natural Gemstone Company provides this prasiolite with full disclosure of its attributes, including weight, dimensions, cutting style, clarity grade, enhancement, and country of origin. The factual combination of a substantial 5.89 carat weight, intense bluish green color, mixed brilliant faceting, eye clean clarity, and excellent polish defines the gem as a notable example within the prasiolite category. For customers evaluating the piece for either investment quality or design integration, the weight is a primary determinant of both visual impact and value tier, and it distinguishes the stone from more common smaller parcels. Documentation of treatment and origin is available upon request from The Natural Gemstone Company to support appraisal and design planning, and experienced staff can advise on mounting options that preserve the optical qualities of the stone while ensuring practical durability for long term wear.