Halo Yellowish Green Sapphire Ring 1.66 Ct., 18K Yellow Gold

This ring centers a transparent 1.66 carat cushion shape yellowish green sapphire, measuring 7.97 by 5.66 by 3.99 millimeters, cut in a mixed brilliant style that combines a faceted pavilion optimized for light return with a modified cushion crown that enhances dispersive sparkle, the mixed brilliant cut yields strong face up brilliance while preserving the stone shape and outline, the sapphire has a clarity grade of very slightly included when evaluated at eye level, medium color saturation that registers as a fresh yellow green on the face, and an excellent polish that produces crisp facet junctions and lively facet contrast, this natural sapphire originates from Madagascar and is heat treated to stabilize and even the body color, the mounting is executed in 18K yellow gold with a halo of white round natural diamonds totaling approximately 0.49 carats for the primary cluster and 0.39 carats for the companion band, the diamonds are graded F for color with very slightly included clarity in the VS1 and VS2 range, the setting uses fine prong work and an open gallery to increase light return to the pavilion, the proportions of the ring have been engineered to balance optical weight of the center stone with scintillation from the surrounding rounds, the overall craftsmanship emphasizes precise seatings, uniform bezel heights where required, and hand finished polish on the shoulders and gallery.

When compared to lab grown sapphire alternatives, this natural Madagascar stone exhibits characteristics that remain distinct to trained gemologists and to discerning collectors, lab grown sapphires can match the corundum hardness of 9 on the Mohs scale and can be produced with exceptional clarity and uniform saturation, however synthetic material typically shows growth patterns and inclusions consistent with manufacturing methods such as flux or hydrothermal growth, natural stones from Madagascar show complex zoning, natural healing feathers and inclusions, and trace element signatures that reflect geological formation, the heat treatment disclosed here is a stable, industry standard enhancement that improves color while preserving natural crystal structure, for buyers seeking long term rarity and provenance the natural sapphire offers collectible value and a unique internal character that lab grown stones seldom replicate, for technical buyers who prioritize absolute uniformity and lower price per carat, lab grown alternatives are a rational choice, The Natural Sapphire Company provides full disclosure and gemological reporting so clients can evaluate natural origin, treatments and comparative value when making a purchase.