6.52 Ct. Bluish Green Prasiolite from Brazil

This prasiolite from Brazil is a transparent, oval shaped gem weighing 6.52 carats, with exact dimensions of 13.71 x 11.17 x 7.50 millimeters. The stone exhibits a bluish green hue with intense color saturation, evaluated as eye clean at normal viewing distance. It has been faceted in a mixed brilliant cutting style to balance sparkle and color dispersion, and it presents an excellent polish that enhances its face up brilliance. The material has undergone heat treatment, a common and stable enhancement for green quartz, and this treatment has been fully disclosed. The Natural Gemstone Company confirms the specimen origin as Brazil, and records for this piece include its mixed brilliant faceting, its eye clean clarity grade, and its well preserved overall finish.

As a member of the quartz family, prasiolite shares fundamental gemological characteristics that define its behavior and handling. The refractive index of quartz falls in a range that yields lively sparkle without the intense fire seen in gems with much higher refractive indices. Quartz has a Mohs hardness of seven, which places it in a practical category for many types of jewelry while requiring some care to avoid abrasion from harder materials. Specific gravity and birefringence values for quartz are modest, and these physical properties contribute to the stone presenting as generously sized for its weight, especially when cut in an oval with dimensions that emphasize table surface. The mixed brilliant cut employed here concentrates light return toward the viewer, optimizing both scintillation and color face up, and the excellent polish ensures minimal light leakage. The heat treatment applied to this sample produces a stable green tone, and properly disclosed treatment of this kind is a standard practice in quality gem handling.

In comparing this prasiolite to famous gemstones of history, the distinctions lie in material character and practical appeal, rather than in headline fame. The Hope Diamond is often cited for its exceptional deep blue color and unique history, and it exemplifies how extreme refractive index and rarity create dramatic optical presence. This prasiolite offers a different kind of attraction, an even and saturated bluish green that reads fresh and contemporary, and it does so with a clarity that many historically famous emeralds do not possess. Classic museum emeralds are valued for their color and historical provenance, yet they frequently show prominent inclusions that attest to their natural formation. The present prasiolite, by contrast, is eye clean and therefore presents an uninterrupted field of color and light, a quality that delivers a clean visual impact comparable to the way a well cut aquamarine or a fine topaz can dominate a setting without internal distraction. When compared to legendary colored stones like Paraiba tourmalines or alexandrites, both of which are prized for rare chromatic effects and high market scarcity, this prasiolite is materially distinct. It does not exhibit color change or the neon intensity of rare copper bearing tourmalines, yet it provides a steady, intense bluish green that reads as refined and wearable, and it achieves this at a practical scale and with consistent optical performance owing to its eye clean clarity and precise cutting.

From a practical perspective, the unique value of this prasiolite rests in its combination of transparent body color, reliable stability after heat treatment, and a cut that maximizes both size and brilliance within the 6.52 carat weight. The oval outline at 13.71 by 11.17 millimeters offers an elegant footprint for a wide range of settings, from classic solitaire rings to bespoke pendants, and the mixed brilliant faceting is effective at balancing saturation and sparkle. Cure and care are straightforward, with warm soapy water and a soft brush recommended for routine cleaning, and avoidance of prolonged exposure to strong acids or extreme thermal shock advised to maintain polish and integrity. For clients seeking a gem that evokes the green of historical stones but with modern clarity and consistency, this prasiolite is an alternative that combines visual appeal with everyday practicality. The Natural Gemstone Company provides full disclosure regarding origin and enhancement, and is available to assist with further technical information or bespoke setting recommendations.