1.03 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This listing describes a single transparent yellow sapphire weighing 1.03 carats, presented in a classic emerald cut. Exact dimensions are 6.94 by 4.99 by 2.86 millimeters, the clarity grade is very slightly included when evaluated at eye level, the color intensity is vivid, and the polish is excellent. The sapphire originates from Ceylon, Sri Lanka, and the stone has undergone beryllium diffusion to enhance its yellow tone. The Natural Sapphire Company confirms full disclosure of the treatment and provides the measurements and grades stated above to assist in accurate evaluation and setting. The combination of weight, dimensions, and clarity offers a clean, transparent face up appearance, suitable for precision mounting in fine jewelry designs where proportion and color are priorities.

The emerald cut faceting plays a central role in the way this sapphire interacts with light, as the step cut structure emphasizes broad, planar facets and linear reflections rather than a profusion of small scintillating flashes. The large rectangular table and the series of parallel step facets on the crown and pavilion create a hall of mirrors effect, producing long, luminous flashes that travel across the length and width of the stone. Because the cut affords a relatively shallow arrangement of facets compared with brilliant cuts, the visible light return is governed by the balance between table size and pavilion depth. With the given depth dimension of 2.86 millimeters relative to the average face dimensions, the depth percentage is approximately 48 percent, a proportion that supports strong face up color and even internal reflection, while maintaining appealing brightness. The trimmed corners typical of the emerald shape reduce the risk of chipping and provide continuity of light flow at the perimeters, which helps the stone read as a single vivid plane of color when set.

Color and clarity interact with the cut to define the visual character of this sapphire, the vivid yellow hue is intensified by the beryllium diffusion enhancement, which has been applied to create a stable and uniform saturation throughout the crystal lattice. The step facets of the emerald cut concentrate color in broader zones rather than breaking it into many small points, so the result is a steady, saturated face up presence that displays depth without patchiness. Clarity graded as very slightly included at eye level indicates the presence of minor internal features that do not interrupt transparency or significantly interrupt the directional light return produced by the faceting. The excellent polish contributes to crisp facet junctions and clean facet planes, minimizing surface scattering and maximizing internal reflection, which in turn preserves the gem's brilliance and the perceptible purity of color. Taken together, these attributes make the sapphire particularly suitable for settings that showcase color, such as solitaire rings, bezel mounts, or east west placements, where the stone is intended to present a strong, consistent visual plane.

From a practical standpoint, the gemstone is ready to be set by jewelers familiar with precise rectangular mounts, the listed dimensions and the emerald profile facilitate accurate bezel sizing and prong placement, and the trimmed corners allow for conservative risk management in everyday wear. The beryllium diffusion treatment is permanent under normal handling and wear, and The Natural Sapphire Company provides treatment disclosure to ensure transparent stewardship of the stone through the design and sale process. Recommended handling for long term preservation is standard for corundum family gems, avoid harsh chemical exposure and consider professional cleaning when needed to maintain optimal polish and luster. In summary, this 1.03 carat Ceylon yellow sapphire combines a measured, vivid color, an emerald cut that enhances linear light reflection and color saturation, a clarity grade that supports a clean presentation, and an excellent polish, all documented and available through The Natural Sapphire Company for incorporation into considered, enduring jewelry designs.