3.02 Ct. Green Sapphire from Madagascar

I am pleased to present a transparent 3.02 carat green sapphire, asscher octagon shape, with precise dimensions of 7.84 x 7.15 x 5.18 mm. The cutting style is faceted, executed in the classic asscher geometry, featuring a stepped pavilion and crown with concentric square facets that create a hall of mirrors effect while maintaining an octagonal outline through trimmed corners. This profile emphasizes both depth and symmetry, yielding controlled light return and a measured play between brilliance and color. The stone is graded eye clean at typical viewing distances, meaning no inclusions are visible to the unaided eye at normal inspection angles. Color intensity is classified as intense, with even saturation across the table and minimal zoning, producing a lively green that holds under mixed lighting. The polish is excellent, with crisp facet junctions and a smooth surface finish that maximizes faceted reflections and reduces light leakage. Enhancement is by heat treatment, a standard and stable practice for sapphire that enhances color saturation and clarity without compromising structural integrity.

The journey of this sapphire began in Madagascar, from artisanal pits and secondary alluvial gravels commonly worked around known gem bearing regions. After extraction, the rough was hand sorted for crystal quality, transparency and potential color distribution. Given the rough morphology and the desire to optimize both weight retention and color concentration, our cutters selected an asscher orientation to take advantage of the rough crystal symmetry and to concentrate color within the table plane. Preforming was followed by a meticulous faceting sequence, where crown and pavilion step facets were cut to exacting angles to balance color depth with light return, and to reduce windowing that can wash out the intense green. Facet symmetry was monitored under high magnification during cutting, and final facet alignment was adjusted to ensure the octagonal outline remained concentric and the trimmed corners true. After precision cutting, the sapphire underwent controlled heat treatment to reduce silk and to fine tune the green hue through modification of trace element states. The heat process was conducted under documented conditions to achieve a permanent and stable outcome. Once treated, the stone received an intensive polishing regimen to reach the excellent polish grade, and then a full grading and inspection. The Natural Sapphire Company tracked the sapphire through each stage, maintaining provenance records and applying our internal quality controls to ensure transparency and responsible sourcing practices.

Technically minded buyers will appreciate the way this asscher cut manages optical behavior. The stepped pavilion and crown create alternating zones of light and dark that enhance perceived depth, while the octagonal outline provides additional protection at the corners in a mounted setting. At 7.84 mm across the table and 5.18 mm depth, the proportions produce a strong color face up, avoiding excessive windowing or a closed appearance. The eye clean clarity permits the cutter to use larger facet planes without the need to mask inclusions, which results in broader, well defined stepped facets and a mirror like appearance. For jewelry applications the stone is an excellent candidate for secure prong settings that support the trimmed corners, or for bezel settings that emphasize the geometric outline and provide maximum protection for everyday wear. Consideration of setting metal will influence apparent color, with warmer metals enhancing the green toward yellow green, and cooler metals maintaining the pure intense green. As a company, The Natural Sapphire Company provides full disclosure of the heat treatment, detailed measurements, carat weight and origin, and we offer recommended mounting options based on the stone geometry and technical characteristics. If you would like further technical data, microscope images, or bespoke setting advice tailored to this specific asscher octagon green sapphire, I am available to assist and to arrange viewing under controlled lighting conditions.