1.68 Ct. Ruby from Mozambique

This oval shaped ruby weighs 1.68 carats and measures 8.02 x 6.04 x 4.19 millimeters, dimensions that yield a depth of approximately 59.6 percent, a proportion that balances face up presence with optimal light return. The gem is transparent with a mixed brilliant cut, the cutting design combining a brilliant style crown with a step influenced pavilion to enhance scintillation while maintaining color saturation. The table and crown facets have been executed to tight symmetry tolerances, and the excellent polish produces crisp facet junctions and minimal surface disturbance, allowing for strong contrast and lively facet patterning. Clarity is described as very very slightly included when evaluated at eye level, indicating only minor internal features that do not detract from the visual performance, and the vivid color intensity is an even, saturated red that exhibits the classic strong tone prized in quality rubies. This material originates from Mozambique, a source noted for producing intensely colored rubies over the past two decades, and the stone has been heat treated, a disclosed enhancement that has been applied to improve transparency and color uniformity while remaining stable under normal wear.

On a gemological level this ruby offers the expected optical and physical properties of gem quality corundum, with a refractive index in the range of 1.762 to 1.770, a birefringence on the order of 0.008, and a specific gravity near 4.00, all contributing to the gem’s substantial presence and lively optical return. The mixed brilliant cutting strategy used here was selected to maximize the interplay between color and brilliance, the brilliant crown opening the stone to deliver sparkle and scintillation, while the stepped elements in the pavilion preserve saturation by limiting excessive light leakage. The cutter maintained conservative pavilion angles and a moderate table to avoid flattening the perceived color, and the facet polish quality rated excellent ensures low light scattering at the surface, which enhances both brilliance and the perceived saturation of the red. The disclosed heat treatment is a routine and stable practice within the trade, typically applied to reduce silk like inclusions and to enhance chroma, and The Natural Ruby Company provides this information transparently to ensure accurate assessment of long term behavior and care requirements.

As an heirloom piece this ruby has the intrinsic materials properties and aesthetic qualities that support multi generational ownership. Corundum rates nine on the Mohs hardness scale, providing exceptional resistance to abrasion for everyday jewelry, and the durable crystal structure supports repeated settings, re mountings, and professional maintenance over decades. The oval outline and near six millimeter average diameter create a versatile center stone for a wide range of classic settings, from a refined four prong solitaire to a protective bezel or a vintage inspired cathedral mount, and the mixed brilliant cut will continue to interact attractively with light even if it is reset to suit changing tastes. To preserve the stone for future generations we recommend a setting that balances security with light exposure, periodic professional inspections of prongs and bezel integrity, and routine cleaning with warm soapy water and a soft brush, avoiding aggressive chemicals. The Natural Ruby Company documents the origin, treatment, and measured proportions for each stone, supporting provenance and providing records that increase confidence for heirs and appraisers alike. With disciplined care, an informed setting choice, and the intrinsic durability and classic color of this Mozambique ruby, the gem is well suited to become a lasting, cherished heirloom that maintains its beauty and desirability across generations.