3.58 Ct. Cabochon Aquamarine from Mozambique

This 3.58 carat Mozambique aquamarine offered by The Natural Gemstone Company is fashioned as a cushion-outline cabochon, dimensions 9.95 x 8.59 x 5.84 mm, presenting a classic domed profile with a flattened pavilion suitable for bezel seating. As a cabochon rather than a faceted stone, the optical behavior emphasizes body color and translucency over scintillation; the dome provides soft internal light diffusion and a subtle cat-eye potential if the stone orientation aligns with any needle-like inclusions. The gem exhibits light color intensity, a delicate sea-blue typical of heat-treated aquamarine, and benefits from a documented heat enhancement that refines greenish undertones to a purer blue without fillers or surface coatings. Polishing quality is excellent, producing a smooth, mirror-like domed surface that enhances apparent transparency and allows accurate evaluation of internal characteristics under loupe and at eye level. Typical beryl refractive indices in this range, approximately 1.577 to 1.583, and a specific gravity in the beryl family, inform setting choices and visual heft relative to the reported carat weight.

Clarity is graded slightly included at eye level, with small pinpoint and feather inclusions visible under direct inspection but not severely disruptive to the overall visual appeal or structural integrity. These inclusions produce minor light scattering under strong illumination, contributing to the gem’s character while retaining good transparency consistent with quality cabochon aquamarines. From a lapidary and setting standpoint, the cushion outline and 5.84 mm thickness afford secure bezel or low-prong mounting, and the excellent polish ensures minimal abrasion during setting. The Mozambique origin is notable for producing clean, light-blue material that responds well to controlled heat treatment, a standard and stable enhancement in aquamarine trade practice. For connoisseurs and designers seeking a technically described, wearable, and authentic natural aquamarine specimen, this piece from The Natural Gemstone Company represents a well-documented example combining stable enhancement, precise cutting intent, and clean lapidary finish suitable for use in rings, pendants, or boutique bespoke settings.