4.78 Ct. Cabochon Ruby from Mozambique

This GIA certified ruby is a 4.78 carat, oval shaped gemstone, with precise dimensions of 10.25 by 8.74 by 5.50 millimeters. The stone is semi translucent, and it exhibits a vivid red hue that is classified as Red in the GIA lab colour classification. The cutting style is a double cabochon cut, with a well controlled dome on the crown and a matching curvature on the pavilion, a symmetry that enhances colour saturation and creates an even field of tone across the table. Clarity is graded as slightly included at eye level, and these internal characteristics are consistent with natural formation, contributing to the gem character without severely affecting light transmission. The polish is excellent, indicating meticulous lapidary finishing, and there has been no enhancement, a factor that preserves both natural value and long term stability. The documented origin is Mozambique, and the GIA certification provides independent verification of the untreated status and of the laboratory colour assignment.

From a technical perspective, the double cabochon execution on this piece demonstrates careful control of dome height and table proportion, which is critical for cabochon rubies to show even colour and to avoid windowing or dark centers. At the specified proportions this ruby maintains a balanced crown to depth ratio, allowing internal light diffusion that emphasizes vivid saturation while retaining a pleasing degree of translucency. The slightly included clarity grade, evaluated at eye level, requires no additional treatments to mask internal features, and in fact those features, when viewed under magnification, confirm natural growth patterns that align with Mozambique provenance. The excellent polish and uniform surface curvature reduce stray reflections and maximize visible depth, making this gem well suited for high end jewellery applications such as a protective bezel set ring, an open back pendant to increase light interaction, or a bespoke statement piece where the untreated nature is a primary selling point. For collectors and connoisseurs seeking verified natural ruby material, The Natural Ruby Company can provide the full GIA report and high resolution imaging upon request, and our specialists are available to advise on setting options that preserve the integrity and visual performance of this fine 4.78 carat Mozambique ruby.