0.83 Ct. Bluish Green Sapphire from Madagascar

This oval shaped bluish green sapphire weighs 0.83 carat, and measures 5.68 by 5.02 by 3.33 millimeters. The length to width ratio is 1.13, a proportion that yields a pleasing oval outline while concentrating color toward the center. The depth is 3.33 millimeters, which corresponds to a depth of approximately 62.2 percent relative to the mean girdle diameter, a depth that balances face up color saturation with optimal light return. The gem is fashioned as a mixed brilliant cut, a faceting scheme that unites brilliant style facets with step style facets to achieve both scintillation and even color distribution. The cutter has prioritized a brilliant influenced crown with carefully placed star and upper girdle facets to generate lively dispersive flashes, while the pavilion faceting employs a modified step layout to preserve color saturation. The overall effect is a stone that presents lively facet contrast while maintaining a controlled face up tone, and the excellent polish ensures clean facet planes and crisp facet junctions that enhance both brilliance and luster.

Color in this bluish green sapphire reads as medium intense on a standardized intensity scale, a grade that denotes a robust, yet not overpowering saturation. The hue sits squarely between blue and green, and the stone exhibits measurable pleochroism, shifting subtly between cooler blue tones and warmer green tones depending on orientation and light source. Trace amounts of transition metal elements in corundum, most commonly iron and titanium, are responsible for the blue green chroma through selective absorption and intervalence charge transfer mechanisms, and this material displays those effects evenly across the table. The cutter oriented the pavilion and crown axes to maximize the most attractive face up color, reducing the risk of windowing or overly dark zones, and the mixed brilliant scheme contributes to a lively appearance without diluting color. The sapphire has undergone routine heat treatment, a stable and industry accepted enhancement that refines color and improves clarity by reducing the visibility of certain inclusions, and this treatment has been performed with restraint to preserve natural character and crystal integrity.

Clarity is graded as very slightly included at eye level, a designation that indicates inclusions are present but do not materially detract from face up appearance under normal viewing. The clarity characteristics are consistent with natural corundum, and in this particular piece the inclusions act as identifying features rather than distractions, offering internal signatures that can assist in identification and origin confirmation. The finish quality is excellent, with polish executed to a high standard and facet junctions that meet stringent lapidary tolerances, resulting in sharp facet edges and uniform reflectivity. From a durability perspective, sapphire is corundum with a Mohs hardness of nine, providing exceptional resistance to abrasion and making this gem highly suitable for daily wear applications. The girdle and culet have been executed to maintain structural integrity for secure setting, and the dimensions and proportions are ideal for a variety of mounting styles including prong set solitaires, bezel mounts, halo configurations, and multi stone compositions.

Origin is Madagascar, a source known for producing sapphires with lively hues and good clarity, and this material reflects the geographic signature of that region. The combination of size, 0.83 carat, exact dimensions 5.68 by 5.02 by 3.33 millimeters, mixed brilliant faceting, very slightly included clarity at eye level, medium intense color intensity, excellent polish, heat treatment enhancement, and Madagascar provenance makes this sapphire an exceptionally versatile candidate for both casual and formal contexts. In relaxed, everyday settings the gem sits elegantly in low profile rings or slender pendants, offering a subtle but unmistakable pop of bluish green that complements denim, linen, and soft leather. In formal presentations the same stone performs as a refined focal point when set in platinum to accent the cooler blue aspects, or in 18 karat yellow or rose gold to warm the green tendencies and create a more vintage or couture aesthetic. The mixed brilliant cut ensures that under candlelight or spotlight the sapphire will scintillate without becoming visually flat, while under daylight it will show a crisp, saturated face up color.

At The Natural Sapphire Company we present this stone as part of our curated selection of responsibly sourced corundum, and we are prepared to provide detailed imagery, calibrated color references, and condition reports upon request. For collectors and connoisseurs who prioritize cutting geometry, optical behavior, and provenance, this sapphire offers a concise technical profile that dovetails with both bespoke design projects and ready to wear pieces. We can advise on ideal setting proportions to protect the girdle and highlight the table plane, recommend accent stone combinations that enhance the bluish green tone without overpowering the center, and arrange professional mounting with attention to symmetry and light performance. If you would like a video of the stone under multiple light sources, a high resolution photography set, or a laboratory report, The Natural Sapphire Company will facilitate those services and discuss options for certificates and appraisals.