0.59 Ct. Yellowish Green Sapphire from Madagascar

This transparent yellowish green sapphire, offered by The Natural Sapphire Company, is precisely described at 0.59 carat with an asscher octagonal outline and measured dimensions of 4.58 by 4.47 by 3.11 millimeters, and it presents a depth that is approximately sixty eight point seven percent of the average diameter, which is an intentional proportion for maximizing color saturation and controlled light return, and the stone is heat treated, originating from Madagascar, with a clarity grade recorded as very very slightly included when evaluated at eye level, and an excellent polish that renders facet junctions crisp and reflective. The asscher octagon form unites square geometry with truncated corners to create a compact, architectural profile, and the transparent body allows for direct assessment of optical performance, while the V V S clarity to the unaided eye ensures that inclusions do not visually interrupt the path of light through the crown and pavilion. This combination of parameters establishes the technical baseline for a gem that reads as minimal in internal disturbance when mounted, and that appears effectively flawless in face up viewing conditions, which is a key attribute for collectors and setters who require both optical purity and robust color saturation.

In its cutting and faceting, this asscher sapphire employs classic step cut principles, with concentric square or octagonal tiers on the crown and a series of descending pavilion steps that create a hall of mirrors effect, and the geometry is executed to tight tolerances so that angles and facet alignment optimize internal reflection and contrast rather than dispersing light into spectral flash, which is less desirable for stones valued for color. The large table facet and well proportioned crown allow the depth and color to read uniformly across the table, while the step facets produce broad, mirrored planes that emphasize color zones and internal reflections, so that movement of the wearer reveals layered color contrast rather than excessive scintillation, which is typical of brilliant cuts. The excellent polish is evident at the facet junctions and on the girdle, reducing surface scattering and permitting maximum light transmission, and the precise symmetry of the asscher octagon minimizes light leakage at the corners and along the pavilion girdle junction, a detail that contributes materially to the perceived lack of blemish when inspected without magnification.

Color and optical character are central to this sapphire, and its yellowish green hue with dark color intensity provides a sophisticated and deep tonal range that responds to directional light and viewing angle due to pleochroic behavior, so that the stone can display a greener face up color under certain orientations and a more yellow green tone under others, which is a desirable trait in collector grade material because it imparts visual complexity. The asscher step cutting concentrates color by retaining more material in the pavilion and by using broad facets that do not disperse light into white flash, therefore the dark intensity reads as depth and presence rather than opacity, and the measured depth proportion supports this balance between saturation and transparency. Heat treatment, a common and stable enhancement for corundum, has been applied in a controlled manner to improve both hue uniformity and clarity by reducing microscopic silk and healing minor fissures, and because the V V S clarity is already strong at face up examination, the treatment primarily refines color and ensures long term stability of the visible tone, a factor that is particularly important for sapphires from Madagascar where a wide range of trace element combinations can produce subtle zonal color variation.

From a setting and design perspective, the asscher octagonal format of this 0.59 carat sapphire is technically versatile and ideally suited to mounts that showcase the architectural step facets, because open prong settings and low bezel walls permit maximum light ingress and allow the mirrored planes to interact with ambient light, and the stone pairs well with both warm and cool metal tones since the yellowish green body color can be complemented by yellow gold to accent the yellow component or by white metals to emphasize the greener character. The precise cutting and excellent polish, combined with the eye clean V V S clarity, mean that the gem will present as visually uninterrupted when set under typical lighting, highlighting the apparent flawlessness at face up inspection and creating the perception of perfection from multiple viewing angles. At The Natural Sapphire Company we document origin and treatment and we can provide additional imaging and gemological reports upon request, and our lapidary partners tune facet junctions and crown angles to maintain the balance between color saturation, light return, and durability, so that this Madagascar asscher sapphire performs predictably in both jewelry and collection contexts, and its technical refinement enhances its beauty from every angle.