10.92 Ct. Bluish Green Prasiolite from Brazil

Presented by The Natural Gemstone Company, this is one beautiful transparent 10.92 carat emerald cut bluish green prasiolite, cut and faceted to exacting standards. The stone measures 13.67 by 12.34 by 9.90 millimeters, and its classic emerald cut emphasizes broad, mirror like facets and a serene stepped pavilion that showcases both depth of color and clarity. Graded as eye clean at normal viewing distance, the gem offers an open, unobstructed window to its interior, allowing the intense bluish green hue to radiate with clarity and consistency. The polish is excellent, producing crisp facet junctions and lively light return across the table and crown, while the heat treatment used to produce and stabilize the prasiolite is a standard and permanent enhancement commonly applied to Brazilian quartz to achieve this particular and highly desirable green tone. Sourced from Brazil, this gem carries the provenance associated with some of the finest quartz material in the market today, and its transparent nature and precise proportions make it ideal for a statement ring or a bespoke pendant.

From a gemological perspective this prasiolite offers attributes that appeal to an educated buyer who values measurable quality. Eye clean clarity is notable at this size, because prasiolite of ten carats and above often contains internal growth features or zoning that can affect brilliance and transparency. The intense color intensity recorded for this stone is comparatively rare in natural green quartz without heavy saturation that dulls life and sparkle. Compared to iconic historical green gems such as the Dresden Green Emerald and other famous museum stones, this prasiolite is different in origin and chemistry, but similar in the way it captures and transmits green that reads rich and mature rather than overly vivid or artificial. Unlike emeralds which commonly display natural inclusions and often require oiling or other clarity enhancements, this prasiolite is free of eye visible inclusions, and its heat treatment is stable and permanent. Against aquamarines and green tourmalines of museum quality, the prasiolite offers excellent brilliance on account of its well executed faceting, and it provides a more consistent and economical option for collectors seeking a saturated green tone without the price and permanence trade offs of higher end emeralds.

For a discerning buyer, this gemstone represents a confluence of rarity, aesthetics, and practical value. The large carat weight at nearly eleven carats combined with the measured dimensions and the emerald cut proportions create a wearable yet commanding presence that performs well under many lighting situations, from daylight to evening illumination. The hardiness of quartz on the Mohs scale offers reasonable day to day durability for jewelry wear, and the heat treatment applied to this prasiolite is a controlled practice that enhances color without compromising stability. The Natural Gemstone Company stands behind the sourcing and description of this gem, and we provide documentation of origin and treatment on request, along with professional advice for setting this stone to maximize its optical virtues while protecting its geometry. For collectors who appreciate historical reference, the gem recalls the contemplative green of celebrated antiquity stones but with modern advantages in clarity and consistency, offering an opportunity to own a striking green gem with clear provenance, technical excellence in cutting and polish, and a unique position in a collection where rarity of color and size in prasiolite make it a memorable and defensible acquisition. Contact The Natural Gemstone Company for additional imagery, exacting measurements under magnification, and personalized consultation on mounting and certification.