2.51 Ct. Ruby from Mozambique

This transparent 2.51 carat heart shape red ruby measures 7.28 x 9.58 x 4.67 mm, and it is presented by The Natural Ruby Company. The gem is a Mozambique ruby, untreated and free of enhancement, with a clarity of very slightly included when evaluated at eye level, vivid color intensity, and an excellent polish. Its mixed brilliant cut combines a faceting scheme designed to maximize light return with the romantic silhouette of a heart shape, producing a consistent and lively play of light across the table and crown. The stone is corundum, an aluminum oxide crystal with a refractive index between 1.762 and 1.770, and a modest birefringence that together create strong internal reflection and contrast that are essential to its visual performance.

The unmatched sparkle of this ruby arises from an interplay of intrinsic material properties and expert cutting. The high refractive index concentrates light within the crystal, while the mixed brilliant cutting pattern establishes a series of crown and pavilion facets that direct light back to the observer in defined flashes. The heart shape introduces subtle curvature at the lobes and pointed base, which produces variable facet orientations that increase scintillation as the gem is viewed from different angles. Because the specimen is very slightly included and otherwise transparent, internal reflections remain clean, allowing small facet reflections to act like mirrors that multiply the ruby red flashes. The excellent polish sharpens facet junctions and preserves crisp geometric transitions, so specular highlights remain intense and well defined. Taken together, the natural optical density of corundum, the balanced proportions of this 7.28 x 9.58 x 4.67 mm heart shape, the mixed brilliant faceting, and the absence of enhancement yield a vibrancy and depth that distinguish this ruby, making it an outstanding center stone for a refined jewelry setting.