4.79 Ct. Ruby from Mozambique

This offering from The Natural Ruby Company is a transparent, other certified purplish red, pinkish red ruby weighing 4.79 carats, presented in an oval shape with dimensions of 12.21 x 8.76 x 5.09 mm. The gem exhibits intense color intensity and an included clarity grade when evaluated at eye level, consistent with natural internal characteristics common to rubies of this size. The stone has undergone heat treatment to enhance color and clarity, and it is of Mozambique origin. The finish is an excellent polish, which preserves surface integrity and contributes to the overall luster and appearance in finished jewelry settings.

The mixed brilliant cut applied to this oval ruby optimizes the interaction between light and the material properties of corundum, yielding both vibrant face up color and efficient light return. The cutter has employed a brilliant style on the crown combined with a complementary facet arrangement on the pavilion, a strategy that directs incoming light into the crown facets for dispersion and scintillation while also using pavilion geometry to reduce light leakage. This arrangement enhances the perceived saturation of the purplish red tone, by favoring the angles that return the stone s stronger color components to the viewer. In addition, the mixed brilliant faceting helps to mitigate the visual impact of internal inclusions by breaking up and redistributing contrast lines, which improves apparent clarity at typical viewing distances. The excellent polish further contributes to specular reflection, ensuring crisp facet junctions and maximizing brightness. Taken together, the cut, polish, and orientation take advantage of corundum s refractive index and pleochroism, balancing brilliance and color, and producing a lively yet deep presentation appropriate for fine jewelry.