10.80 Ct. Yellowish Green Prasiolite from Brazil

This prasiolite is a transparent, emerald cut gemstone weighing 10.80 carats, offered by The Natural Gemstone Company. The stone displays a yellowish green hue with a medium color intensity, and it measures 15.51 millimeters by 11.52 millimeters by 8.02 millimeters. The cut is an emerald style, selected to emphasize clean lines and broad facet planes, and the polish has been evaluated as excellent. Clarity is graded as very slightly included, evaluated at eye level, indicating minor internal characteristics that do not materially detract from the gem's visual performance. The material originates from Brazil, and the color has been achieved through controlled heat treatment. These combined attributes establish the prasiolite as a substantive and collectible example of this material.

The weight of 10.80 carats is a defining attribute in both the market value and the practical rarity of this prasiolite. Prasiolite is typically more commonly encountered at smaller dimensions, and specimens above 8 carats become increasingly uncommon. A 10.80 carat example therefore occupies a relative scarcity class, which is reflected in price per carat dynamics. In the trade, larger single stones command a premium not only because they are less frequent in nature, but also because they allow for design flexibility that is not available with smaller gems. The emerald cut used for this piece preserves more of the original rough material than more wasteful cutting styles, enabling the retention of the substantial carat weight while delivering an elegant, architectural appearance. Collectors and designers value stones of this size for their capacity to be the focal point in a single stone setting, while still maintaining proportions suitable for high quality jewelry work.

Weight interacts with color, clarity, and cut to determine overall value, and in this prasiolite those interactions are favorable. The medium color intensity scales well across the stone, and the emerald cut allows the hue to present evenly across the larger table, avoiding patchiness that can occur in unevenly colored material. The clarity grade very slightly included, evaluated at eye level, indicates that internal features are present but not pronounced, and on a stone of this size those small inclusions are relatively less impactful to the overall appearance than they would be in a smaller gem. The excellent polish enhances the play of light across the broad facets, contributing to a restrained, luminous character rather than high sparkle, which is consistent with the architectural aesthetic of the emerald cut. Heat treatment, disclosed as an enhancement, is a standard and stable process for prasiolite, and it contributes to the uniformity of the yellowish green tone without compromising the structural integrity of the stone.

From a practical standpoint, a 10.80 carat prasiolite of these dimensions presents specific opportunities and considerations for setting and long term use. The substantial size allows the gem to function as the primary element in a ring, pendant, or brooch, and the emerald cut lends itself to protective bezel or semi bezel settings that align with its straight facets and corners. The combination of substantial weight and very slightly included clarity suggests that routine wearers should consider secure settings that protect the corners and girdle, while also allowing the table to remain visible so the gem can display its tone and depth. The Natural Gemstone Company provides full disclosure of origin and enhancement history, and can assist with documentation and images suitable for appraisal and insurance purposes. For clients and designers who prioritize size and visual presence, this Brazilian prasiolite represents a rare, well finished, and technically transparent option that balances carat weight with a refined finish.