0.81 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This is a transparent, round shape blue sapphire weighing 0.81 carat, with precise dimensions of 5.29 by 5.33 by 3.63 millimeters, presented by The Natural Sapphire Company. The stone has a mixed brilliant cut, combining a brilliant facet arrangement on the crown with a faceted pavilion tailored to enhance both scintillation and color depth. Clarity is graded as very very slightly included, evaluated at eye level, and the finish is an excellent polish, resulting in crisp facet junctions and strong light return. Color is classified as medium intensity blue, the hue characteristic of fine Ceylon sources, and importantly, this sapphire is unenhanced, reporting no heating or diffusion treatments, which confirms natural color stability and provenance from Ceylon Sri Lanka.

The mixed brilliant cutting style used on this piece is executed to precise proportions, the pavilion depth of 3.63 millimeters relative to the average diameter of 5.31 millimeters yields a depth percentage of approximately 68.3 percent, a proportion that favors color saturation and internal light performance in a sapphire of this size. The crown facet layout preserves brilliant flashes, while the pavilion facet configuration directs light back through the crown to create a lively face up appearance. The result is a balance between fire and body color, where medium color intensity is preserved under varied lighting environments. Facet symmetry is tight, and the excellent polish minimizes surface abrasion, both factors that amplify optical performance and maintain long term brilliance in daily wear.

Clarity in this stone is at a very very slightly included level when viewed at eye level, meaning inclusions are minimal and do not interfere with transparency or optical performance. These internal features are expected to be small pinpoint crystals or faint rutile silk, positioned so as not to compromise structural integrity. Because the sapphire has no enhancement, its color and clarity are inherent, and the gem benefits from the historically prized tonal characteristics of Ceylon Sri Lanka material, often described as a bright to medium blue with a slight cooling overtone. Unenhanced corundum from this region is prized for its natural state, and this specimen will retain its color without the risk of alteration that some treated stones may present over time.

Durability for daily wear is a primary advantage of this sapphire, rooted in corundum mineralogy and careful cutting. Corundum registers a Mohs hardness of 9, making it highly resistant to scratching from everyday materials, and it has no true cleavage planes, which enhances its resistance to catastrophic fracturing. The mixed brilliant cut with a well defined girdle and excellent polish further reduces susceptibility to surface nicks, and the stone is well suited to secure setting styles such as bezel mounts or low profile prong settings that protect the girdle and crown. Routine care is straightforward, warm soapy water and a soft brush will maintain the polish, and the absence of treatments means the stone tolerates standard jewelry maintenance techniques. For customers seeking a gem that combines technical excellence with proven wearability, The Natural Sapphire Company recommends professional setting and periodic inspection of claws or bezel to ensure long term security and performance.