5.09 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

This specimen is a 5.09 carat round moonstone with precise dimensions of 10.94 x 10.92 x 5.98 mm, presented in a classic cabochon profile. The shape is uniformly round, and the dome geometry reflects careful preforming and centering during the lapidary process. The cabochon cut has been executed to produce a smooth, evenly convex upper surface paired with a proportionally flattened pavilion that preserves weight while optimizing light transmission. The near equal length and width values indicate excellent symmetry, and the height to diameter ratio delivers a prominent dome without appearing overly tall in typical mounting styles. Origin is Ceylon Sri Lanka, a locality known for fine feldspar material, and the piece is offered by The Natural Gemstone Company. No enhancement has been applied, which retains the gem in its natural state and ensures stability under normal wearing conditions.

Color evaluation places this moonstone in a medium light intensity category, with a warm brown field tone that contains subtle neutral to slightly golden undertones. The translucency is best described as translucent to semi translucent, allowing internal light penetration that activates the stone s internal optical effects. While moonstone is classically prized for adularescence, this brown variety presents a gentle internal sheen that is most visible when illuminated with diffuse light and viewed at oblique angles. The cabochon dome has been proportioned to project that sheen across the surface, the curved geometry enabling interference between alternating feldspar layers which generates the soft, floating shimmer. Color consistency across the table is uniform, with no abrupt zoning, which speaks to careful rough selection and orientation during cutting to maximize both color and internal effect.

Clarity is graded very slightly included at eye level, reflecting small internal features that are visible only upon careful inspection and that do not significantly interrupt the overall visual appeal. These minute inclusions are typical of natural feldspars and manifest as fine internal growth features or tiny platelets, they interact benignly with the adularescent layer structure and in some lighting can even contribute to the three dimensional quality of the sheen. Surface finish is described as excellent polish, the lapidary finishing sequence having removed any tool marks and micro abrasions to create a high gloss surface that enhances luster and optical transparency. The cutting workflow for this cabochon would have included careful preform shaping on coarse abrasives, progressive sanding through fine grits to remove subsurface damage, and a final polish that produces a mirror like surface, techniques that are evident in the crisp, reflective highlights visible on the dome. Because there is no treatment or enhancement, the observed color, clarity, and polish represent the natural material and the cutter s skill.

From a practical standpoint the dimensions and dome profile offer flexibility in jewelry applications, the 11 mm diameter and 6 mm height making this cabochon suitable for medium to substantial ring settings, solitaire pendants, or strong bezel mounted designs where the dome can be shown off and protected. The smooth rounded perimeter and stable pavilion allow secure bezel seating, while the pronounced dome benefits settings that orient the table to capture light from multiple directions. For designers seeking to emphasize the internal sheen, orienting the stone so that its best adularescence is directed toward the wearer will maximize visual impact, and pairing the piece with warm metal tones can complement the brown body color. This moonstone represents a balance between aesthetic appeal and lapidary integrity, it is a natural, unfixed example from Ceylon with measured parameters and documented characteristics, and it is presented by The Natural Gemstone Company with full disclosure of origin, cut, clarity, color, and enhancement status. If you require additional technical photographs, viewing angles, or mounting recommendations, we are available to provide further details to assist in the selection and design process.