5.13 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 5.13 carat radiant shape blue sapphire measures 10.26 x 8.15 x 5.94 mm, presenting an approximate depth ratio of 64.5 percent, a profile that balances face up presence with controlled pavilion depth for optimal light return. The radiant cut combines a trimmed rectangular outline with a mixed faceting schema, employing brilliant style facets on the crown and adapted pavilion faceting to increase scintillation and preserve color saturation. The cutting emphasizes broad facet windows and crisp facet junctions, supported by an excellent polish that enhances mirror like reflections across the table and crown facets. Clarity is graded as very very slightly included evaluated at eye level, the internal characteristics being minute and positioned so as not to interrupt overall transparency or the stone s ability to transmit light. Color intensity is vivid, a saturated medium to deep blue with subtle violet leaning flashes visible in certain facet orientations, a color profile consistent with material originating from Ceylon, Sri Lanka. Enhancement is heat treated, a stable and widely accepted treatment that enhances hue homogeneity and reduces masking inclusions, while preserving natural crystal structure and durability.

When set in jewelry this sapphire s vivid blue adapts to a wide range of skin tones through considered choice of metal, mounting style, and surrounding accent stones. On cool skin tones with pink or blue undertones the pure blue will be best presented in white metals such as platinum or white gold, where the metal will reinforce the stone s cool spectral response and emphasize clarity and brilliance. For warm skin tones with golden or olive undertones pairing this sapphire with yellow gold introduces complementary contrast, the warmth of the metal softening the blue and creating a classic, high contrast presentation. Rosy or neutral skin tones gain a contemporary, balanced look with rose gold, the red gold reflecting back subtle warmth into the pavilion flashes without muting the vivid saturation. For deeper skin tones the stone reads as highly luminous and saturated, the vivid blue providing dramatic contrast when set in either white metal for a cool statement, or in yellow gold for a regal effect. Design recommendations include a four or six prong mounting to maximize light entry for face up brilliance, or a low bezel for wearability without sacrificing the stone s size presence, and optional diamond halos to increase perceived size and add white light contrast. The Natural Sapphire Company offers this Ceylon origin sapphire as a technically superior example of radiant cutting and vivid blue color, suitable for a center stone in rings, pendants, or bespoke settings.