15.10 Ct. Green Prasiolite from Brazil

This exquisite prasiolite from The Natural Gemstone Company is a rare and substantial example of green quartz, weighing 15.10 carats, and measuring 15.66 x 15.57 x 11.59 mm, presented in a classic round shape with a mixed brilliant cut. The mixed brilliant facet design combines a brilliant cut crown with a step cut pavilion to optimize scintillation and depth, producing lively light return and a pleasing table view. The gem is transparent with an intense green color intensity, and it exhibits a clarity grade of very slightly included, evaluated at eye level, meaning that to the naked eye it appears remarkably clean while retaining minor natural characteristics that attest to its natural origin. The polish is excellent, which further enhances light performance and surface luster. This prasiolite has been heat treated, a standard and accepted enhancement for green quartz that stabilizes and intensifies hue, and its origin is Brazil, a region globally renowned for supplying high quality quartz crystals and skilled lapidary work.

From a gemological perspective this prasiolite offers attributes that educated buyers will value, including size, color, cut, and overall condition. Prasiolite is a green variety of quartz, with physical properties that make it durable enough for many jewelry applications, including a Mohs hardness of 7, and a refractive index around 1.54 to 1.55 that yields pleasing brilliance without being overly demanding in settings. The clarity grade of very slightly included, evaluated at eye level, indicates that inclusions are minimal and do not detract from the gem's appearance, and the excellent polish indicates careful lapidary attention to facet symmetry and surface quality. Heat treatment is common for prasiolite and is well understood within the trade, as natural green quartz in this tone is uncommon, and controlled heating of Brazilian material produces stable and attractive green hues. When compared to green gems such as emerald or tourmaline, this prasiolite offers a much larger apparent size for the price, combined with easier wearability, and the intense color and transparency make it a compelling value for collectors and designers seeking a significant green stone without the premium of emerald clarity and rarity.

There is a romantic narrative that complements the technical excellence of this gem, inspired by its vivid green tone and clear presence. Imagine a spring evening in the Brazilian highlands where a shaft of sunlight through the canopy catches a newly unfurled leaf, turning it into a bright, living jewel. This prasiolite captures that moment, its intense green suggesting renewal, hope, and the beginning of a shared life. The very slightly included clarity becomes part of the story, a reminder that true beauty is not flawless, but honest and enduring, with small natural features that speak to origin and journey. The heat that deepened its color can be likened to the trials that temper a lasting bond, producing a richer and more resilient hue. Mounted in a simple, elegant setting, this stone will read as both contemporary and timeless, suitable for an engagement ring that favors individuality, a pendant that celebrates a milestone, or a bespoke commission that tells a personal story. The Natural Gemstone Company stands behind the gem with documentation of its characteristics and provenance, and we offer guidance on settings and certification to ensure that this prasiolite becomes a treasured and trusted centerpiece in any collection.