10.99 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This is a beautiful transparent 10.99 carat radiant shape yellow sapphire, with dimensions of 12.25 by 10.63 by 7.92 mm, presented by The Natural Sapphire Company. The stone displays a vivid color intensity and an excellent polish, with a radiant cut that balances brilliant facetation and a clean outline. Clarity is graded as very slightly included when evaluated at eye level, meaning the few natural inclusions are minor, do not affect the gem's transparency, and in fact often serve as useful indicators of natural origin. This sapphire is unenhanced, no enhancement, and originates from Ceylon Sri Lanka, a region long respected for producing strongly colored, lively yellow sapphires. The combination of size, vivid hue, untreated status, and precision cutting makes this gem particularly desirable to an educated buyer seeking both visual impact and geological integrity.

The exceptional sparkle of this sapphire is a product of both its crystalline structure and the skillful radiant cut. Sapphire is corundum, an aluminum oxide mineral with a high refractive index in the range typical for gem corundum, and a modest dispersion. These physical properties promote strong internal reflection of light, while the radiant cut marries step and brilliant facets to maximize return and scintillation. The precise facet geometry, crisp facet junctions, and excellent polish enhance contrast and light return, producing lively flashes and scintillation that are especially apparent when the stone moves. The very slightly included clarity grade ensures that light transmission remains excellent, so fire and brightness are not compromised. Origin from Ceylon contributes to the stone s optical character, with the material s natural chemistry favoring bright, saturated yellow tones that play well with the cut to produce an unmatched visual presence. For collectors and connoisseurs who prioritize natural provenance, superior cut quality, and uncompromised optical performance, this 10.99 carat radiant yellow sapphire is a rare offering, and The Natural Sapphire Company is pleased to provide full details and assistance with certification, viewing, and custom mounting.