4.01 Ct. Ruby from Mozambique

This transparent 4.01 carat cushion shape ruby measures 10.04 by 7.36 by 5.45 millimeters, and employs a mixed brilliant cut with an excellent polish, resulting in a balanced combination of scintillation and windowing control. The stone displays vivid color intensity, a saturated and evenly distributed red that remains lively across a range of viewing conditions. Clarity is graded as very very slightly included, evaluated at eye level, and the inclusions are minimal and well positioned, supporting both transparency and light performance without distracting from the gem s visual appeal. Origin documentation records Mozambique as the source, and the ruby has undergone a standard heat treatment, an enhancement that is industry accepted and that improves color and clarity while producing a stable, durable material for jewelry use. The Natural Ruby Company provides full disclosure of these characteristics to ensure an informed purchase and straightforward integration into custom settings.

Corundum, the mineral species to which ruby belongs, rates nine on the Mohs hardness scale, second only to diamond, and this intrinsic hardness is the primary contributor to the ruby s suitability for everyday wear. In addition to hardness, this specimen s mixed brilliant cut and excellent polish create smooth facet junctions and a durable table plane that resist surface abrasion and the gradual dulling that can occur with frequent handling. The lack of pronounced cleavage in corundum means the stone is far less prone to catastrophic breakage from ordinary knocks than materials with perfect cleavage, and the stone s depth of 5.45 millimeters provides sufficient volume to absorb incidental impacts when set appropriately. The applied heat treatment is stable under normal use and conventional jewelry maintenance, and because the clarity has been conservatively assessed at eye level, there is a reduced likelihood that routine cleaning or wearing will reveal structural vulnerabilities.

For daily wear applications such as rings, pendants, and bracelets, this ruby is particularly well suited when combined with protective setting choices and regular maintenance. Bezel and partial bezel settings offer the greatest protection by shielding the girdle and pavilion from edge contact, while well executed prong settings with secure claws provide a balance between protection and light performance. Routine care is straightforward, using warm water, mild detergent, and a soft brush to remove surface oils and environmental residues, followed by professional inspection to confirm setting security and overall condition. Avoiding prolonged exposure to strong acids and extreme thermal shocks preserves both the heat treatment and the cut surface. With its substantial 4.01 carat weight, vivid color, transparent body, and professional finish, this Mozambique ruby from The Natural Ruby Company combines the inherent toughness of corundum with thoughtful cutting and treatment to deliver a gem that performs reliably in daily jewelry, maintaining its brilliance and structural integrity with prudent care.