1.33 Ct. Orangish Yellow Sapphire from Ceylon (Sri Lanka)

This transparent 1.33 carat oval orangish yellow sapphire measures 8.00 by 5.98 by 3.36 millimeters, yielding a depth of approximately 48 percent, a proportion that balances vitality and stability for an oval layout. The stone is fashioned in a mixed brilliant cut, combining a faceted crown that optimizes scintillation with a pavilion geometry designed for efficient light return. The facet junctions and girdle were executed to achieve an even light distribution across the table and crown facets, and the excellent polish produces crisp facet intersections and minimal surface diffusion, which preserve the gem scintillation under direct and diffuse lighting. Clarity is graded very very slightly included, evaluated at eye level, indicating that internal features are minor and do not materially affect overall transparency or brilliance, permitting exceptional face up presence for its size.

Color in this piece is described as orangish yellow with intense color intensity, a vivid and saturated tone that reads strongly in hand and on the finger, while remaining bright and lively under a range of white light sources. The mixed brilliant faceting accentuates this saturation by breaking light into concentrated flashes, enhancing both body color and light return. The gem has undergone beryllium diffusion enhancement, a lattice level treatment that introduces beryllium into the corundum structure to stabilize and intensify yellow and orange color centers. This disclosure is integral to accurate valuation, since diffusion extends the palette available from natural corundum, producing hues that are otherwise very rare, while the diffusion is confined to predictable zones and does not compromise the stone surface. The stone also displays the directional color response that is typical for corundum, offering subtle shifts in tone as it is tilted, which adds visual complexity without detracting from the dominant intense orangish yellow appearance.

The documented origin of this sapphire is Ceylon, Sri Lanka, a provenance that carries both historical and geological significance for connoisseurs and collectors. Ceylon is renowned for producing sapphires with clear, bright saturation and lively transparency, a result of unique metamorphic host rocks and fluid chemistries that favor trace element distributions conducive to vivid color. Provenance from Ceylon therefore adds contextual value, since the regional signature is recognized by gem laboratories and experienced gemologists, and collectors often prize Sri Lankan stones for their classic balance between color saturation and clarity. At The Natural Sapphire Company we emphasize accurate disclosure, including the Ceylon origin and the beryllium diffusion enhancement, because informed provenance and treatment transparency materially affect setting decisions, long term value, and buyer confidence. This orangish yellow oval is an excellent candidate for bespoke jewelry, especially in settings that showcase the table and crown, and we recommend professional mounting with consideration for the stone proportions to preserve visual depth and secure the pavilion without obscuring the optimized mixed brilliant faceting. A full laboratory report can be supplied on request to confirm technical details and provenance documentation.