4.72 Ct. Cabochon Ruby from Mozambique

This specimen is a translucent AGL certified red ruby, weighing 4.72 carats, presented in a round cabochon form, with precise dimensions of 10.32 by 10.20 by 5.50 millimeters, certified origin Mozambique, enhancement heat treated, lab color classification Red. The round outline has been executed with strict dimensional control, the near equality of the two diameter measurements confirming a high degree of concentric symmetry, the 5.50 millimeter height yields a dome ratio of approximately 53 percent relative to the maximum diameter, and this generous dome contributes to a saturated visual depth while preserving a pleasing wearable profile. The combination of weight and dimensions places this stone in a category that is highly practical for single stone rings and pendants where a strong color statement is required, the AGL report accompanying the ruby provides independent verification of both locality and laboratory color designation, and The Natural Ruby Company stands behind the documented attributes and treatment disclosure.

The cabochon cut on this ruby is executed with attention to curvature geometry and surface continuity, the apex is well centered and the dome exhibits a smooth spherical progression from apex to girdle, the girdle itself is consistent in thickness and presents a smooth, carefully finished junction between the curved dome and the lower periphery. Unlike faceted stones where pavilion angles dictate light return, the cabochon relies on controlled curvature and translucency to modulate light, the deep rounded dome of this piece supports strong internal color saturation and a uniform color field, and the excellent polish reported and visible under magnification ensures minimal surface diffusion, allowing specular highlights to form cleanly without surface abrasions that would scatter light. Craftsmanship indicators such as uniform roundness, absence of tool marks, and an even calmed surface show a high level of lapidary control, attributes that are critical to both aesthetic performance and longevity in mounted jewelry.

Color and clarity are the defining technical characteristics of this ruby, the stone exhibits vivid color intensity with a dominant pure red hue, the chromophore distribution is sufficient to produce a strong saturation across the dome without pronounced banding or disruptive color zoning, translucency allows light to penetrate and interact with internal features producing a rich, deep red appearance while avoiding an overly dark tone that would deaden brilliance. Clarity is described as very slightly included when evaluated at eye level, these inclusions are minimal in size and dispersion, they do not form fracture networks and they do not materially compromise structural integrity, under magnification the inclusions read as natural growth features rather than post formation fractures, and the heat treatment disclosure aligns with common and stable enhancement practices that improve color saturation and reduce the visual impact of minor inclusions. The excellent polish further minimizes the visual prominence of internal features, preserving an uninterrupted color field that is particularly desirable in cabochon presentations where surface quality and internal homogeneity govern perceived value.

From an application and valuation perspective the combination of AGL certification, Mozambique origin, vivid red color, and very slightly included clarity makes this ruby an attractive candidate for quality oriented collectors and designers who prioritize natural origin and documented treatment. The physical proportions and cabochon architecture favor closed back and bezel settings that support the dome and display the intense color in profile, alternatively a shallow chimney bezel can allow light entry from the side to enhance translucency in more open designs, the robust dome also permits use in signet inspired pieces and bespoke designs where the stone is the primary visual focus. For buyers seeking verified provenance and technical transparency, The Natural Ruby Company provides the AGL certificate with the stone and will assist with setting recommendations that preserve the documented attributes during mounting, our technical team can advise on bezel wall height, backing materials, and any supplemental lighting strategies to maximize the perceived saturation while maintaining the integrity of the cabochon.