9.79 Ct. Bluish Green Prasiolite from Brazil

This remarkable transparent 9.79 carat oval bluish green prasiolite, measuring 15.24 x 12.60 x 9.37 mm, is an exceptional specimen from Brazil, offered by The Natural Gemstone Company. Faceted in a mixed brilliant style, the cutting combines step and brilliant facets to provide both depth and lively scintillation, producing an eye-catching balance of color saturation and light return. The stone carries an intense color intensity and an excellent polish, and its clarity is graded as very slightly included, evaluated at eye level, meaning inclusions are minimal and do not detract from the gem’s face-up appearance for everyday viewing. This prasiolite has been irradiated, a standard and stable enhancement used to develop and fix the desirable bluish green hue; the treatment is common in the trade and fully disclosed to maintain trust. As a variety of quartz, prasiolite has a durable Mohs hardness of around 7, making this 9.79 carat gem suitable for a wide range of jewelry settings while offering the visual presence and sizable carat weight that collectors and educated buyers prize.

For buyers familiar with historic gems, this prasiolite’s appeal can be understood by comparison rather than direct equivalence. Whereas famous green gems of history, such as celebrated Colombian emeralds admired by royalty, are prized for their saturated green tones but often carry significant inclusions and require oiling, this prasiolite delivers a clean, transparent face-up appearance with outstanding brilliance, eliminating the need for such treatments. Similarly, unlike rare color-change stones prized for their shifting hues, this piece offers a stable, intense bluish green that reads consistently elegant under normal lighting. Large, clean prasiolites of nearly 10 carats are uncommon on the market, especially with a mixed brilliant cut and excellent polish, making this gem a compelling alternative for collectors and designers seeking a sizable, eye-clean green gemstone with reliable durability and honest treatment disclosure. If you value measured grading, clear provenance from Brazil, and the visual advantages of a well-cut, transparent stone, this prasiolite represents a uniquely attractive and trustworthy acquisition from The Natural Gemstone Company.