13.30 Ct. Bluish Green Prasiolite from Madagascar

There are gemstones that speak not only to the eye, but to the long arc of human taste, and this remarkable bluish green prasiolite carries that quiet authority. Green variants of quartz have been admired in various cultures for their association with renewal, balance, and calm, and the cushion shape of this stone recalls the classic silhouettes worn by generations who valued proportion and poise above fleeting fashion. From the softly rounded corners to the confident presence of a substantial 13.30 carats, this prasiolite feels like a rediscovered treasure, a piece that could have been set into heirloom jewelry centuries ago and still read as utterly modern today. At The Natural Gemstone Company we celebrate that continuity, offering stones that marry geological story with the enduring design principles that make something timeless.

This prasiolite measures 17.75 x 12.83 x 9.69 mm, a generous size that reads as elegant and wearable in a variety of settings, while the faceted mixed brilliant cut has been executed to exacting standards to maximize its optical performance. The mixed brilliant arrangement allows facets to capture and return light with both depth and sparkle, creating scintillation across the table and along the pavilion as the gem moves. The clarity is graded very very slightly included, evaluated at eye level, which in practical terms means the stone is virtually flawless to the unaided eye, allowing the vivid bluish green color intensity to read clean and pure from every viewpoint. An excellent polish further refines each facet edge, producing mirror like surfaces that enhance the sensation of clarity and color saturation, so that every glance reveals fresh life in the stone.

The prasiolite has been treated by irradiation to achieve and stabilize its captivating hue, a common and stable enhancement widely used to reveal the best character of certain quartz specimens, and one that we disclose with transparency. Originating from Madagascar, this gem brings the distinct geological fingerprint of that island, where high quality quartz crystals are found with exceptional transparency and clean crystal habit. The mixed brilliant cut and precise facet symmetry work in concert with the stone s natural properties to produce an even distribution of color, with gentle shifts between bluish and green tones that make the gem interesting and alive under varied lighting. From the face up view to side elevations, and from dramatic spotlighting to the softer light of daylight, the piece retains strong saturation and a lively play of light, attributes accentuated by the nearly flawless clarity and the masterful polish.

For those who prize history and legacy in their jewels, this prasiolite represents an opportunity to acquire a gemstone that blends timeless form with modern lapidary excellence. Its substantial carat weight and classic cushion profile lend themselves to settings that echo tradition, such as cathedral mounts or vintage inspired halos, yet the vivid bluish green hue allows contemporary interpretations that feel fresh and distinctive. At The Natural Gemstone Company we source and present gemstones with care, ensuring provenance, treatment disclosures, and a level of finish that honors the stone s natural beauty. Whether you are commissioning a singular heirloom, expanding a curated collection, or seeking a centerpiece that will wear as comfortably in the present as it will within the narrative of the future, this 13.30 carat Madagascar prasiolite offers a rare and timeless choice.