3.10 Ct. Ruby from Mozambique

This exceptional transparent ruby, offered by The Natural Ruby Company, is a GRS certified Vivid Red example that combines rare color purity with a very wearable size and classic cushion shape, making it a superb choice for discerning buyers and custom jewelry designers alike. At 3.10 carats and measuring 8.97 by 8.19 by 4.66 millimeters, the stone occupies the sweet spot between presence and practicality, large enough to command attention as a single stone solitaire, and compact enough to integrate seamlessly into intricate halo, three stone, or bespoke multi stone designs. The origin of this ruby is Mozambique, a source that over the last decade has supplied some of the market's most vibrant rubies, and the GRS report confirms the geographic origin, the absence of enhancement, and the stone's vivid color intensity, which together create a high level of confidence for educated buyers who prioritize natural origin and treatment history. The no enhancement status is especially important for collectors and designers seeking natural, untreated color, and GRS certification is one of the most respected third party validations available, providing a clear, independent record of the stone's characteristics and provenance.

From a gemological standpoint this ruby is noteworthy in its combination of cutting, clarity, and polish, which together optimize both color and brilliance for finished jewelry. The cushion shape with a mixed brilliant cut blends facets typical of both step and brilliant cutting philosophies, giving the stone a balance between depth of color and lively scintillation, while the excellent polish ensures precise facet junctions that maximize light return. The clarity has been evaluated as very slightly included at eye level, a practical and desirable grade for rubies of this size and color because small internal features do not interrupt the overall visual impact when mounted, yet they validate the natural origin of the gem to a trained eye. The dimensions and depth of 4.66 millimeters produce a pleasing table to depth ratio for a cushion that preserves color saturation without over darkening the pavilion, and the mixed brilliant facet arrangement helps the vivid red appear both deep in tone and animated by flashes of brighter red highlights, which is an important consideration when selecting a ruby intended to be set in a reflective metal such as yellow gold or platinum.

When planning custom jewelry around this ruby, its proportions and optical properties make it exceptionally versatile and reliable for a range of settings and styles. As a center stone for a ring, a cushion shape close to nine by eight millimeters provides a strong visual anchor, and the stone will sit attractively in traditional prong settings that allow maximum light entry, or in a low bezel or closed set for a more secure everyday wear solution, depending on the design priorities. The mixed brilliant cut is forgiving under different lighting conditions and jewelry typologies, retaining color saturation while offering scintillation that complements diamonds and other accent stones, which is ideal for halo designs where contrast between the vivid ruby and surrounding white stones creates a striking focal point. For custom pendants and earrings the dimensions translate into pieces that read as substantial without being cumbersome, and the existing excellent polish and well executed pavilion angles mean setters can expect predictable performance when determining metal height, bezel thickness, and prong placement. From a stylistic perspective, warm metals such as rose or yellow gold will harmonize with the ruby's vivid red to produce a classic, richly toned aesthetic, while platinum or white gold will increase perceived contrast and allow the red to pop against a cool setting, and experienced jewelers can also orient the stone slightly off axis to tune the appearance of red saturation and windowing in the finished piece.

For customers who appreciate transparency in grading and origin, this ruby's GRS certification, untreated status, vivid color intensity, and very slightly included clarity provide a compelling value proposition, and The Natural Ruby Company stands behind the accuracy of these attributes for buyers who require documented proof for investment quality or heirloom commissions. In practical terms, the stone's measurements and mixed brilliant cushion profile simplify many custom design decisions, because its depth and table proportions accommodate common setting styles without sacrificing color or brilliance, allowing designers to focus on metal work and accent choices rather than compensating for optical issues. Finally, because natural rubies of vivid red and this size are relatively rare, acquiring a GRS certified, no enhancement stone from a reputable source enhances both the collectible and wearable aspects of the piece, and we are happy to provide high resolution images, lighting condition notes, and setup recommendations to ensure the finished item reflects the full potential of this beautiful Mozambique ruby.