8.42 Ct. Ruby from Mozambique

This 8.42 carat oval red ruby measures 13.35 x 10.28 x 6.85 mm, and is a faceted gem cut in a mixed brilliant cut to balance luminous return and scintillation. The color registers as intense color intensity, and the stone exhibits a clarity grade of included, evaluated at eye level, with visible internal features that affirm its natural origin. The polish is excellent, providing mirror like facet surfaces that maximize light return, and the stone has been heated with residue, an enhancement that is common and disclosed for full transparency. Origin is Mozambique, a source known for producing richly saturated rubies that compete with traditional centers, and this specimen is presented by The Natural Ruby Company with full disclosure and careful grading notes.

The superior sparkle of this ruby derives from both its internal corundum structure and the precision of the mixed brilliant cut. Ruby is a variety of corundum with a trigonal crystal system and a relatively high refractive index, which together with hardness near nine on the Mohs scale allows fine facet edges and durable polish. The mixed brilliant design combines a faceted crown optimized for brilliance with a pavilion featuring brilliant style facets that return light efficiently, producing balanced white light brilliance and lively red flashes across the table and crown. Excellent polish and well executed facet junctions reduce light leakage and enhance contrast, while natural inclusions can act as tiny reflectors and diffusers, contributing to complex scintillation patterns that change with movement. For the educated buyer, the combination of intense color intensity, a well proportioned mixed brilliant cut, natural indicators in the included clarity, and transparent disclosure of heating with residue make this ruby a compelling purchase, offering both aesthetic impact and sound gemological provenance, a presentation that reflects the values of The Natural Ruby Company.