0.85 Ct. Blue Sapphire from Nigeria

This transparent 0.85 carat blue sapphire is presented in an emerald cut, with precise dimensions of 5.78 by 4.69 by 3.28 millimeters. The measured depth of 3.28 millimeters yields a depth proportion of approximately sixty two point seven percent when compared to the average of the length and width, a proportion that supports an appealing balance between color saturation and face up brightness. The stone has been graded as eye clean at typical viewing distances, indicating that inclusions are not visible to the unaided eye, and it shows a dark color intensity that gives the blue a resolute depth and richness. The emerald cut emphasizes linear facets and a broad table, making clarity and polish critically important, and this sapphire exhibits excellent polish that produces crisp facet junctions and steady luster. Origin is Nigeria, and there is no enhancement, confirming that the color and clarity are natural and untreated, a quality that has meaningful implications for value and rarity.

The weight of 0.85 carat is a central attribute to consider, because carat weight is a primary driver of both market valuation and perceived rarity for sapphires. Stones approach significant price steps as they near the one carat threshold, and a high quality untreated sapphire at 0.85 carat commands a premium relative to lower weight material with similar color and clarity. The combination of weight, dark color intensity, and transparent material increases the per carat value, since saturation and tone have a multiplicative effect on desirability. The emerald cut further influences how weight translates to face up appearance, because its stepped facets distribute color more evenly than brilliant cutting styles, allowing a slightly lower weight to read larger and more uniformly saturated when viewed in a finished mounting. Because this sapphire is untreated, its weight is especially meaningful, as finding natural, untreated material at this scale is less common than finding treated examples, and collectors and connoisseurs assign additional value to natural provenance and original crystal character.

From a practical and design perspective, the 0.85 carat emerald cut blue sapphire offers versatility while retaining notable presence. Its compact dimensions make it suitable for a range of settings, from classic solitaire rings to multi stone or halo compositions, and the emerald cut encourages clean, architectural settings that accentuate the sapphire’s step facets and clarity. The stone’s hardness and toughness, characteristic of corundum, support daily wear for fine jewelry, and the absence of enhancement simplifies long term care and future appraisal. At The Natural Sapphire Company we document origin and treatment status, and we provide measured dimensions and grading observations to support informed decisions. The combination of certified weight, transparent material, eye clean clarity, excellent polish, dark natural color, and Nigerian origin situates this sapphire as a specimen of notable character and rarity, suitable for buyers seeking a naturally occurring, well cut gem with enduring aesthetic and investment attributes.