1.61 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This gemstone is a transparent 1.61 carat princess shape yellow sapphire, measuring 6.26 x 6.23 x 4.30 mm, sourced from Ceylon Sri Lanka, untreated with no enhancement, and presented by The Natural Sapphire Company. The precision of the square pavilion and crown is immediately apparent from the near perfect symmetry of the dimensions, with the length and width aligning at 6.26 mm and 6.23 mm respectively. The princess cut quality is clear in the crisp facet junctions and the defined corner geometry. Clarity is graded very very slightly included evaluated at eye level, which means inclusions are minimal and do not detract from the gem when set, particularly under normal viewing conditions. The stone exhibits intense color intensity, a lively yellow hue that reads strongly in both daylight and warm indoor lighting. Polish is excellent, with mirror like facet surfaces that enhance brilliance and facilitate clean light return. For clients and designers who require exacting material for custom pieces, these specifications indicate a premium, stable, and visually commanding center stone.

From a faceting and cut engineering perspective, the princess cut here is executed to maximize both color saturation and scintillation, making the stone a reliable performer in a variety of settings. The measured depth of 4.30 mm relative to the average face dimensions produces a depth index of approximately sixty nine percent, a proportion that balances color concentration with return of light. The crown and pavilion facets are aligned to create internal reflection pathways typical of a high quality princess cut, where chevron and step like pavilion facets combine with kite and triangular crown facets to create a dynamic pattern of flashes. The square geometry and tight symmetry yield consistent face up appearance, limiting the risk of color zoning across the table. The excellent polish reduces light leakage at facet junctions and sharpens facet edges, contributing to crisp scintillation and a finely defined window through which the intense yellow hue can be read. For gem cutters and jewelers, these attributes translate into predictable performance when mounted, facilitating precise planning for seat angles and prong placement.

The intense yellow color is notable for its saturation and relative purity, showing a primary yellow hue with warm golden undertones consistent with Ceylon provenance. The combination of depth and polished facet architecture concentrates color in a way that will read vividly as a center stone, without appearing too dark in typical pendant or ring applications. Because the sapphire is natural and untreated, the color reflects inherent crystal chemistry rather than laboratory enhancement, which is a key consideration for collectors and bespoke designers seeking natural material authenticity. The stone performs well in both open and closed back settings, though an open back or low bezel will allow maximum light interaction and the fullest display of hue. Color distribution is even across the table and towards the corners, a benefit of the precise princess cut geometry and quality faceting. For custom design, the measured square face and modest depth permit a clean seat in square or rounded settings, while the 6.26 mm face is ideal for a centerpiece that is showy without overwhelming proportionally balanced mountings.

Practical considerations for custom jewelry construction include the handling of the princess cut corners, the typical stress points for square cuts under wear. V shaped prongs or corner protectors are recommended to safeguard each corner without obscuring the visual square silhouette. The 1.61 carat weight at approximately 6.26 x 6.23 mm offers a versatile size, suitable for an engagement ring center, solitaire pendant, matching stud earrings in a pair with another similar stone, or as a prominent stone in a three stone composition. The stone is durable for everyday wear with sapphire hardness ranking near nine on the Mohs scale, yet the sharp corners are best preserved with secure, protective settings. The excellent polish and very very slightly included clarity evaluated at eye level mean that minimal setting work is needed to hide girdle imperfections, enabling clean mounting with less risk of needing additional recuts. At The Natural Sapphire Company we can provide detailed imaging, profile measurements, and advice on optimal seat angles and prong designs to integrate this princess shape yellow sapphire into a wide range of bespoke creations, ensuring the technical properties of the stone are respected during the fabrication process and the final piece achieves both aesthetic and structural excellence.