4.10 Ct. Ruby from Mozambique

This 4.10 carat oval ruby is a study in proportion and optical engineering, with dimensions of 10.85 by 8.46 by 5.09 millimeters and a depth to average diameter proportion of approximately 52.8 percent, which optimizes face up color saturation while preserving brilliance. The oval outline provides an elegant elongation ideal for classic solitaire and three stone settings, while the mixed brilliant cut marries a brilliant style crown with a modified pavilion geometry to control light leakage and enhance scintillation. The mixed brilliant arrangement produces a play of small to medium sized facets across the crown that yield lively pinpoint flashes, while the pavilion geometry concentrates light return toward the table, reinforcing the stone wide field of vivid pinkish red tone. The excellent polish is evident in high quality facet junctions and smooth facet planes, which maximize internal reflection and ensure that the surface finish does not detract from the stone color. The result is a gem that reads richly at face up, with an expansive table presentation that presents color first, and brilliance second, as is desirable in top echelon colored gemstones.

Clarity is graded as included when evaluated at eye level, a characteristic common to natural rubies and one that plays a constructive role in this stone microstructure. Under loupe examination the ruby displays characteristic internal features such as fine silk and isolated crystal inclusions, which confirm natural origin and often contribute to a velvety appearance that deepens perceived saturation. These internal features are stable and do not imply structural weakness, the overall cutting and girdle thickness maintain integrity for jewelry mounting, and the inclusions are managed by the mixed facet geometry to scatter light in a way that reduces windowing and enhances color uniformity. The ruby has undergone standard heat treatment, a controlled thermal enhancement commonly applied to rubies to improve color uniformity and to partially diminish dense silk where present, while leaving the essential natural crystal structure intact. In practical terms the heat treatment is conventional, stable, and fully disclosed, while the excellent polish and proportional cutting preserve durability and make the gem practical for everyday wear.

Color intensity is vivid, with a pinkish red hue that sits comfortably in the premium saturation zone for rubies, and this attribute is the primary value driver for this specimen. Historically famous rubies are celebrated for color as much as for size or provenance, and in that context this ruby compares favorably in tone and saturation to many classic examples. The ruby approaches the deep, vivid saturation historically associated with the finest Burmese Mogok examples, while the Mozambique origin imparts a slightly different hue balance that can be described as a brighter, fresher red leaning toward pink, rather than the darker pigeon blood nuance. Compared to museum gems like the Sunrise Ruby that command fame for extraordinary color and size, this 4.10 carat stone offers a similarly intense visual impact at a more accessible scale, which is attractive to collectors who prefer wearable gems with museum grade color attributes. Unlike large historic cabochons and star rubies such as the Rosser Reeves example, this mixed brilliant, faceted oval is cut for optical performance in jewelry, combining historic color ideals with modern lapidary precision to yield a stone that reads intensely under both natural daylight and artificial display lighting.

The Natural Ruby Company presents this Mozambique ruby as a distinct offering for connoisseurs who seek technical excellence and documented origin, with transparent disclosure of treatment and grading observations. Its combination of 4.10 carat weight, meticulous mixed brilliant cutting, vivid color intensity, and excellent polish addresses the collector need for a stone that balances rarity and practicality. In setting this ruby, the cutting proportions and oval silhouette favor designs that emphasize table size and color field, such as four or six prong solitaires with low profile bezel backs, east west oval mounts, or halo settings that maintain the jewel face up emphasis. For appraisal and integration into fine jewelry we recommend a formal laboratory report to accompany proprietary documentation from The Natural Ruby Company, which will record the Mozambique origin, heat treatment disclosure, and the eye level clarity evaluation. For buyers with a technical appreciation for lapidary choices and color science, this ruby represents a rare intersection of natural origin, careful cutting, and vivid chroma, offering a tangible link to the grand tradition of historic rubies while delivering the modern advantages of proportioned cutting and finish.