15.13 Ct. Green Prasiolite from Brazil

This transparent 15.13 carat oval green prasiolite measures 18.81 by 15.38 by 9.71 millimeters, and presents as a technically refined masterpiece of lapidary work, faceted with a fantasy cut in three dimensional geometry, clarity graded eye clean at typical viewing distance, color described as intense green with uniform saturation, and an excellent polish. The fantasy cut deploys an elevated crown architecture and a complex pavilion network, giving rise to layered facet junctions that increase internal reflections and produce dynamic scintillation, the length to width ratio of approximately 1.22 yields a classic oval silhouette, and the depth ratio of roughly 56.8 percent provides balanced light return while maintaining strong structural proportions for secure setting. The cutting demonstrates precise facet alignment and symmetric girdle execution, the polish is mirror smooth across crown and pavilion facets, and the overall optical effect emphasizes both color depth and prismatic dispersion, suitable for a centerpiece in fine jewelry.

This prasiolite has been heat treated to achieve its stable green hue, treatment that we disclose openly as part of our transparency policy, the rough originates from Brazil and has been procured through channels that adhere to our ethical sourcing standards at The Natural Gemstone Company. We maintain documented chain of custody, work with vetted miners who implement minimized land disturbance practices, and ensure fair compensation and safe working conditions for all involved in the supply chain, for the conscious collector this gem represents both aesthetic and ethical value, a responsibly sourced statement piece that complements a stewardship minded collection. Practical care guidance is simple, avoid exposure to strong prolonged direct sunlight and extreme thermal shock, clean with mild soap and warm water using a soft brush, avoid harsh chemical cleaners and household steam, and when setting for daily wear consider protective bezel or secure multi prong mounts to preserve the precise facet edges of the fantasy cut. If you require additional documentation on origin, treatment disclosure, or high resolution imaging to evaluate facet structure, The Natural Gemstone Company can provide detailed reports and imagery to support informed acquisition decisions.