4.71 Ct. Ruby from Mozambique

One transparent 4.71 carat oval shape pinkish red ruby is presented with dimensions of 12.88 by 7.35 by 5.65 mm, a mixed brilliant cut, and a clarity grade of included as evaluated at eye level. The stone displays vivid color intensity and an excellent polish, with a documented enhancement of heat treatment, and a documented origin of Mozambique. The mixed brilliant cut balances crown and pavilion facets to optimize face up color and light return, while the excellent polish ensures clean facet intersections and minimal surface diffusion of light. The inclusion suite is visible at eye level, which moderates idealized brilliance but contributes to the natural character and depth of the stone, and the overall transparency allows for strong color saturation without appearing overtly dark. The Natural Ruby Company provides this ruby with full disclosure of treatment and origin, and the presentation emphasizes the gemological attributes that define its market position.

When assessed against other gemstones in the same color category, this ruby exhibits characteristic corundum optical behavior, including a refractive index that produces a firm, lively brilliance and a vitreous to slightly adamantine luster that remains consistent under varied lighting. Compared to red spinel of similar tone, this ruby typically returns light with greater intensity due to a higher refractive index, resulting in more pronounced flash and a perceivable sense of inner depth. Compared to garnet group stones that can show strong fire but often deliver a heavier, less lively overall return, the ruby maintains crisper facet reflections and a cleaner play of light, especially with the mixed brilliant cutting style. Pleochroism in rubies can present subtle shifts between pink and red when the stone is viewed from different angles, a quality that this Mozambique specimen displays, and which contributes to visual interest more than would be expected from singly refractive alternatives. While eye visible inclusions reduce absolute brilliance compared to a loupe clean stone, the combination of vivid color intensity, thoughtful cutting, and excellent polish yields a balanced reflective quality that emphasizes saturated hue and defined facet reflections rather than sheer scintillation alone.