6.94 Ct. Bluish Green Prasiolite from Brazil

This listing describes a single, transparent bluish green prasiolite, weighing 6.94 carats, presented in a classical round shape. The stone measures 12.89 by 12.90 by 7.94 millimeters, and it is faceted with a mixed brilliant cut to balance brilliance and color saturation. The clarity grade is recorded as very very slightly included, evaluated at eye level, reflecting exceptionally low visible inclusions for a stone of this dimension. Color intensity is classified as intense, and the polish is graded excellent, contributing to strong light return and a refined surface finish. The material is an irradiated prasiolite, originating from Brazil, which is noted as the source on accompanying documentation. This prasiolite is offered by The Natural Gemstone Company, and the description focuses on objective attributes that determine its gemological character and practical value.

The weight of 6.94 carats is a primary determinant of both rarity and market value for prasiolite, and it deserves close attention when assessing this gem. Prasiolite is a green to greenish blue variety of quartz, and while smaller specimens are relatively common, stones approaching and exceeding five carats with high clarity and intense color are notably less frequent in the commercial market. Carat weight does not scale linearly with value or rarity, instead larger sizes often command a premium per carat because each additional carat represents a proportionally greater reduction in the available supply of clean, well colored material. For this prasiolite the near seven carat weight places it within a size range that is sought for use as a primary center stone, where its face up presence and color saturation become defining attributes. In practical terms the 6.94 carat weight increases the stone's visual impact, and combined with the round mixed brilliant geometry, it yields a significant table area that displays the intense bluish green color more effectively than smaller examples.

Beyond the headline weight, the combination of clarity, cut, and dimensions further amplifies the rarity and value profile of this prasiolite. The very very slightly included clarity grade, assessed at eye level, indicates that inclusions are minimal and do not distract from the gem when viewed in typical settings. This level of clarity is particularly noteworthy in a stone of nearly seven carats, since larger quartz specimens more commonly exhibit visible inclusions. The mixed brilliant cut is chosen to maximize light performance while preserving the volume and color of the rough, a decision that impacts both the final weight and the market desirability. The excellent polish enhances surface luster and contributes to the perception of depth and brilliance, which in turn supports the stone's premium positioning. The measured depth of 7.94 millimeters, relative to the diameter, suggests a proportion that favors both table clarity and pavilion return, which is important for a round gem intended to show even color and lively scintillation.

Provenance, treatment, and care considerations are part of a complete assessment of value, and they are stated clearly for this gem. The green tone in prasiolite is commonly produced by controlled irradiation of certain quartz material, and this piece is disclosed as irradiated, a stable and accepted enhancement process when performed and documented correctly. The Brazilian origin denotes a well established source for green and blue green quartz varieties, and the combination of origin, treatment, and quality characteristics supports transparent appraisal. From a practical perspective, prasiolite has the durability typical of quartz, making it suitable for standard jewelry settings, and the 6.94 carat weight opens design options ranging from prominent single stone rings to substantial pendants or bespoke pieces where the size and color are intended to be central. The Natural Gemstone Company makes this technical information available to facilitate informed decisions, and basic care recommendations include avoiding sudden temperature extremes and exposure to harsh chemicals, along with routine cleaning with mild detergent and a soft brush to maintain the excellent polish and color presentation.