1.67 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 1.67 carat transparent oval blue sapphire represents a clear statement of premium quality, its carat weight combining substantial presence with wearable proportions, a balance that collectors and connoisseurs prize. The stone originates from Ceylon Sri Lanka, a historical source known for producing blue sapphires with luminous depth and fine crystalline clarity, and it has been enhanced by routine heat treatment to optimize its color and internal transparency. At 1.67 carats this sapphire sits in a weight class that materially increases its market value compared with smaller sizes, while retaining practicality for fine jewellery design, making it an attractive option for both investment grade pieces and for high end bespoke settings. The Natural Sapphire Company presents this gem with full attention to its measured attributes, so that the weight in carats is appreciated not simply as a number, but as an integral expression of the stone quality, cutting choices and overall presence when set.

The oval outline measures 8.39 by 6.28 by 3.61 mm, proportions that yield an overall depth that is approximately 49.2 percent of the average diameter, a profile that reflects the cutter s priority to preserve weight and color. The mixed brilliant faceting strategy has been employed, combining a brilliant style crown that maximizes scintillation with a more controlled pavilion architecture that concentrates color and minimizes light leakage. The crown facets have been oriented to create lively flash from table reflections while the pavilion planes are shaped to return light through the face of the stone rather than dispersing it into the body, resulting in a visually deep and saturated blue when viewed face up. The oval format introduces subtle elongation that enhances the perceived size relative to equivalent round stones, and the present dimensional relationship is well suited to prong set rings that accentuate length, to east west mounts, and to bespoke settings where the color field is required to dominate the design.

Clarity is graded as very slightly included under standard eye level examination, an assessment that indicates minor internal features that do not materially detract from the gem s transparency or appeal to the naked eye. These minute inclusions are often internal zircon or rutile remnants consistent with natural sapphires from Sri Lanka, and in this specimen they act as internal character rather than as flaws that compromise durability or brilliance. The intense color intensity of the stone is a defining characteristic, with a saturated blue that maintains depth across the table without veiling, a quality that demonstrates both suitable tone and saturated chroma. The polish has been executed to an excellent standard, with crisp facet junctions and even facet surfaces that promote clean light return and minimal surface diffusion, a finish that requires meticulous lapidary control to achieve on corundum and that contributes directly to the sense of quality when the sapphire is examined under magnification or worn in daylight and artificial light sources.

From a practical and technical perspective this 1.67 carat Ceylon origin sapphire is a premium choice for a variety of high end jewelry applications, because its weight and proportions allow for presence even in subtle mounting designs, and because the mixed brilliant cut and excellent polish ensure reliable optical performance. For ring applications the pavilion depth and table relationships encourage prong settings that emphasize face up color, while bezel settings can be used where protective mounting is required without sacrificing color intensity. The Natural Sapphire Company offers this gem with provenance details and with recommendations for metal choice and setting geometry to optimize the interaction between the sapphire s intense blue field and the surrounding metalwork, ensuring that the carat weight is shown to best advantage. Collectors seeking a transparent sapphire with notable color saturation, precise cutting, and verified origin will find that the measured 1.67 carat weight in this stone translates directly into rarity and value, an outcome that combines aesthetic appeal with the technical standards expected by discerning buyers.