0.83 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This listing presents a transparent 0.83 carat round blue sapphire, with precise dimensions of 5.77 by 5.78 by 3.44 millimeters, cut in a faceted style with a mixed brilliant cut. The stone displays intense color intensity and an excellent polish, with a clarity grading of very slightly included when evaluated at eye level. The sapphire has been heat treated, a standard and widely accepted enhancement in the trade, and its origin is Ceylon Sri Lanka. The Natural Sapphire Company provides this gem with full disclosure of its characteristics, allowing for a clear assessment of its optical performance and structural attributes. The round mixed brilliant cut maximizes face up brilliance while conserving weight from the rough through careful pavilion proportions, and the very slightly included clarity grade means the stone reads clean to the eye while retaining natural internal character when examined under magnification.

Weight is a primary determinant of a sapphire s intrinsic value, and the 0.83 carat weight of this stone occupies an important position in the market. Sapphires are priced per carat, and price per carat typically increases as stones approach and cross common weight thresholds such as 0.50 carat, 0.75 carat, 1.00 carat, and 2.00 carats. A stone at 0.83 carat benefits from being above the three quarters carat reference point while remaining below the one carat mark where market pricing often steps higher. This means the buyer captures much of the visual presence and rarity premium associated with larger stones, with a more moderate price increment than would apply at a full one carat. The specific gravity of corundum influences how dimensions translate to weight, and the close equality of the table diameter dimensions in this gem indicates efficient cutting and good symmetry, which in turn support strong face up color and brightness given the 3.44 millimeter depth.

Beyond the numerical weight, the qualitative interaction between carat, color, clarity, cut, and origin governs rarity and long term value. This sapphire s intense blue color is the primary value driver, and when that intensity is paired with a weight approaching one carat, availability in the market becomes more constrained. High quality Ceylon sapphires with vivid to intense saturation and very good clarity at near one carat are sought after by collectors and designers because they balance wearability with presence. Heat treatment is disclosed and is a common, stabilized enhancement that improves color while maintaining the integrity of the crystal structure, and it is fully accounted for in valuation. The very slightly included clarity grade ensures the stone presents with clean appearance in typical viewing conditions, and this clarity together with an excellent polish amplifies the way the 0.83 carat weight reads on the hand or in a setting, contributing to perceived size and value beyond raw carat alone.

From a practical perspective the 0.83 carat Ceylon blue sapphire is highly versatile for jewelry design, and the combination of round mixed brilliant cutting and measured proportions provides predictable performance in a variety of mounting styles. A bezel, low crown prong, or knife edge setting will protect the stone while allowing the intense color to dominate the visual field, and a well proportioned mounting will emphasize the efficient balance of diameter to depth that characterizes this gem. For appraisal and insurance purposes the documented weight and dimensions, the clarity evaluation at eye level, the heat treatment disclosure, and the origin statement from Ceylon Sri Lanka provide a complete basis for valuation. The Natural Sapphire Company includes these objective details so that purchasers may assess how the 0.83 carat weight contributes to rarity, wearability, and investment potential. Proper care involves routine gentle cleaning with warm water and mild detergent, and professional inspection of the setting to maintain security and polish over time, ensuring that the weight and quality of this sapphire retain their value in the years ahead.