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

One transparent 1.64 carat pear shape orangish yellow sapphire is presented with precise proportions of 8.78 by 6.72 by 3.65 millimeters, yielding a length to width ratio of approximately 1.31 and a depth percentage close to 47 percent, metrics that produce a poised pear outline with restrained depth for strong face up presence. The stone is cut to a mixed brilliant schema, with a brilliant style crown to maximize scintillation and a restrained step influenced pavilion geometry to optimize internal light return and directional color. The table and girdle relationships have been balanced to enhance both dispersion and even color distribution, and the surface finish is graded excellent for polish, producing crisp facet junctions and lively facet reflections. Clarity is recorded as very very slightly included when evaluated at eye level, a practical grade that preserves transparency and minimizes visible inclusions in face up viewing, while maintaining clean windows for light to travel through the stone. The hue registers as an intense orangish yellow, a saturation that reads as vivid across standard daylight and warm incandescent viewing conditions, and the origin is documented as Ceylon Sri Lanka, a provenance known for producing sapphires with fine saturation and lively tone.

From a gemological and finishing perspective the mixed brilliant cut has been selected to reconcile two objectives, maximize scintillation from the crown and preserve directional color saturation from the pavilion, an approach that benefits colored stones where both sparkle and hue are critical. The intense orangish yellow color is a function of trace element chemistry characteristic of Ceylon material, and the lattice diffused enhancement applied to this gem has been executed to produce an even, high saturation face up color while preserving structural integrity. Lattice diffusion involves high temperature treatment to introduce or mobilize chromophores within the sapphire lattice, creating more uniform coloration that is durable under normal wear conditions. The diffusion is disclosed fully, and the stone is offered with explicit information about the enhancement, including the technical nature of the treatment and guidance on long term stability. Because the color is produced by diffusion of colorant species into the crystal lattice at elevated temperature, the resulting chromophore systems are stable to sunlight and routine cleaning, however aggressive chemicals and extreme heat should be avoided to preserve settings and any surface finishes.

The Natural Sapphire Company has sourced this Ceylon sapphire within a transparent chain of custody, and our procurement protocols emphasize traceability, fair compensation for miners, and investment in local community initiatives, elements that support ethical sourcing and mitigate adverse social impacts. We commission independent verification of origin where feasible, and we provide full disclosure of all treatments including lattice diffusion at point of sale, aligning with best practice disclosure standards for conscious buyers. Cutting and finishing are performed or supervised by master cutters whose technical decisions focus on conserving rough material and optimizing yield and performance, an approach that reduces waste and honors the integrity of each crystal. Our relationships with Sri Lankan partners extend to on the ground support for responsible environmental practice, and documentation regarding provenance and enhancement history is available with the stone to support institutional buyers and private collectors who require provenance and treatment transparency.

For the conscious consumer seeking a technically refined addition to a curated collection this 1.64 carat Ceylon pear sapphire offers both aesthetic presence and ethical clarity, a durable gem that rates nine on the Mohs scale and is well suited for everyday wear in rings pendant pieces or custom commissions. The intense orangish yellow color benefits from warm metal choices such as yellow or rose gold to enhance the hue, while cooler metals such as platinum provide a modern contrast that highlights brilliance and clarity. The mixed brilliant cut provides excellent return for accenting diamonds or for solitary settings that emphasize colored light return and scintillation, and because the enhancement has been disclosed and documented the piece integrates readily into a collection that values transparency and stewardship. The Natural Sapphire Company can provide high resolution images magnified detail photography and laboratory reports on request, and our sales team can advise on setting proportions and mounting options that preserve the stone during fabrication and optimize long term wearability.