2.63 Ct. Ruby from Mozambique

This transparent 2.63 carat oval shape ruby from Mozambique is a fine example of color and form, with precise dimensions of 10.20 x 7.49 x 3.67 mm, a mixed brilliant cut, vivid color intensity, and an excellent polish, offered by The Natural Ruby Company. The color reads pinkish red on a trained eye, with vivid saturation that immediately signals chromium rich corundum, and the transparency allows strong light transmission through the stone. The mixed brilliant cut combines a brilliant facet arrangement on the crown with a more open pavilion geometry to balance light return and color saturation, and this design choice was selected to give the stone an energetic face up appearance while preserving weight and deep color. The clarity is graded included at eye level, which means there are natural internal features visible without magnification, a common condition in natural rubies from Mozambique that does not negate the gem's overall desirability, especially when the color and polish are of high quality. The stone has been heat treated, which is the standard and widely accepted enhancement that improves color uniformity and reduces some rutile inclusions, and it has been given an excellent polish that sharpens facet junctions and maximizes contrast and light return.

To understand why this ruby exhibits an unmatched sparkle, it helps to consider the fundamental structure and optical properties of corundum, the mineral species that rubies belong to. Corundum is aluminum oxide, a trigonal crystal, and its refractive index sits around 1.762 to 1.770, with a modest birefringence near 0.008 to 0.010, values that are high enough to produce strong internal reflection without the dispersion seen in diamonds. When a mixed brilliant cut is executed with proper proportions, crown facets act as windows that allow light into the stone while pavilion facets reflect that light back through the crown, yielding bright flashes of red and pink. Vivid color intensity increases the perception of fire and radiance because the stone selectively absorbs certain wavelengths and reemits or transmits the deep red wavelengths more strongly. In many Mozambique rubies, trace chromium causes both the deep red hue and a tendency to fluoresce under ultraviolet light, and this fluorescence can enhance the perceived saturation in daylight conditions. Natural inclusions, often rutile silk or mineral crystals, can scatter light microscopically to create scintillation and depth, and in this particular gem the included clarity at eye level does not mask the color but rather contributes to a lively, textured sparkle when the stone is moved under light. The excellent polish ensures that light crosses facet boundaries with minimal loss, which is critical because even the best color can appear dull without sharp facet surfaces to channel the light.

For the informed buyer this 2.63 carat oval ruby represents a compelling combination of rare size, vivid Mozambique color, and practical durability, and The Natural Ruby Company presents it with transparent details about treatment and origin. Color remains the single most important value factor in ruby pricing, and vivid and transparent material of this weight is uncommon, especially in an attractive oval that measures 10.20 x 7.49 mm and will sit beautifully in many ring, pendant, or bespoke settings. The included clarity grade signals natural formation and provides character, while the heat treatment is a stable, industry standard enhancement that improves the gemstone without obscure or risky procedures. As corundum has a hardness of 9 on the Mohs scale and excellent toughness, this ruby is suitable for everyday wear in a secure setting, and the excellent polish will maintain an enduring face up brightness. For collectors and connoisseurs who value provenance, Mozambique has emerged as a reputable source for high quality rubies with strong, saturated tones, and origin plays a role in both rarity and desirability. We can provide additional high resolution imagery and detailed provenance documentation upon request, and our gemological team at The Natural Ruby Company is available to discuss setting options that will maximize the stone's optical performance and long term value.