1.91 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape blue sapphire presents a precise balance of weight and presence, at 1.91 carats, and the carat weight is the defining metric for its rarity and market value. At this scale, a Ceylon Sri Lanka sapphire moves into a tier where price per carat increases non linearly, because larger clean material in vivid color is less common in the Sri Lankan supply. The 1.91 carat weight yields a substantial face up area, with dimensions of 8.32 by 5.86 millimeters and a height of 4.22 millimeters, dimensions that translate into a visually dominant table and an even pavilion profile when set. For collectors who monitor supply curves and per carat pricing, this stone represents a scarcity premium, because two carat and larger stones with comparable clarity and vividness are significantly rarer than smaller parcels, and commercial demand for stones that require minimal sacrifice of color or clarity during cutting drives liquidity and resale depth.

The cutter elected a mixed brilliant cut on a cushion outline to optimize color saturation and optical return, a deliberate technical choice that affects the appearance more than small adjustments to dimensions. The mixed brilliant pattern combines a faceted crown with a pavilion featuring modified brilliant facets, concentrating light back through the table while preserving rich blue saturation along the girdle and corners. The measured depth to average diameter is approximately 59.5 percent, a proportion that supports strong face up color without absorbing excessive light in the pavilion, and the table to width ratio creates broad flashes of concentrated blue rather than thin washed out zones. Clarity at very slightly included when evaluated at eye level indicates that inclusions are minor, often pinpoint crystals or faint silk that do not interrupt transparency or diminish the stone when viewed unaided, and this contributes to both aesthetic quality and market grade. The excellent polish amplifies facet definition, ensuring crisp facet junctions and maximum fire within the limits of corundum dispersion, and the transparency confirms that lapidary decisions were optimized to retain weight while achieving outstanding surface finish.

This sapphire has been heat treated to standard industry practice, a stable enhancement that improves color and clarity without compromising long term durability, and provenance from Ceylon Sri Lanka adds a documented historical premium because Sri Lankan material is prized for its clean, vivid blues. When weight, color intensity, and eye level clarity are combined, the result is a stone whose value density is elevated, because heavier stones with vivid color and very slight inclusions are drawn from a narrower segment of the production curve. For practical mounting considerations, the cushion outline and the 8.32 by 5.86 millimeter table allow for protective prong architecture or a bezel that preserves face up color, and the 4.22 millimeter depth accommodates standard head settings without excessive gallery work. At The Natural Sapphire Company we catalogue such stones with technical measurements, high resolution imagery, and documentation that supports both aesthetic assessment and valuation, and this particular 1.91 carat cushion offers a compelling blend of physical presence, lapidary craftsmanship, and provenance that appeals to connoisseurs and investors who prioritize the interplay between carat weight and intrinsic rarity.