4.23 Ct. Ruby from Mozambique

This Mozambique origin ruby from The Natural Ruby Company is a transparent oval weighing 4.23 carats, with dimensions 11.93 by 9.05 by 4.32 millimeters, and a depth of approximately 41 percent relative to the average diameter. The stone displays a pinkish red hue with vivid color intensity, the result of chromium as the dominant chromophore in the corundum lattice, and it has been heat treated to stabilize and intensify the tone in a stable, industry standard process. The cutter employed a mixed brilliant motif, combining a faceted brilliant crown with a more angular pavilion arrangement, and the excellent polish yields crisp facet junctions and razor sharp facet planes. Clarity is graded included at eye level, reflecting natural internal features that are typical for high quality Mozambique material, and these inclusions are strategically oriented and minimized during cutting to preserve maximum transparency and light throughput.

The optical performance of this ruby is where its structure produces an unmatched sparkle, the high refractive index near 1.77 in corundum ensures strong refraction at each facet interface, and the mixed brilliant cutting scheme was executed to optimize both return of white light and delivery of saturated color. Crown angles are set to refract incident light into the pavilion, where carefully proportioned pavilion facets produce total internal reflections and channel photons back through the table and crown, creating broad flashes of brilliance and lively scintillation. Fine facet symmetry and excellent polish reduce light leakage, while internal inclusions contribute localized light scattering that enhances pinpoint sparkle without substantially dulling the overall brightness. The vivid color intensity provides exceptional body color under face up viewing, while the combination of depth, mixed brilliant faceting, and precise facet geometry yields a balance of strong pleochroism and dynamic fire. This ruby is ideally suited to a bespoke setting that showcases both color saturation and optical performance, and it reflects The Natural Ruby Company standards for provenance, cutting philosophy, and gemological integrity.