1.80 Ct. Bluish Green Sapphire from Madagascar

This gemstone is a transparent 1.80 carat oval sapphire, with precise dimensions of 8.42 x 6.77 x 3.74 millimeters, cut in a faceted mixed brilliant style. The cutter has retained a balanced silhouette, producing a well centered table and a pavilion depth that yields an overall depth of approximately 49 percent, a proportion that optimizes both color saturation and light return for an oval of this span. The mixed brilliant approach employs a brilliant facet arrangement on the crown to enhance scintillation, coupled with a controlled step or modified pavilion that deepens apparent color without introducing excessive windowing. The excellent polish is evident in crisp facet junctions and finely finished girdle facets, which together allow clean transmission of light through the body of the stone, and the symmetry is consistent with high quality lapidary work appropriate for a primary ring center.

Color is a defining feature of this stone, exhibiting a bluish green hue with dark color intensity and a strong saturation that reads as teal to the eye, depending on viewing angle and light source. This bluish green field is atypical among sapphires in the near two carat range, because the combination of both clear transparency and deep blue green tone is less commonly found in larger material. The stone displays noticeable pleochroism, shifting between blue and green facets as it is rotated under directional lighting, a behavior consistent with corundum chemistry and orientation of trace elements. Origin is Madagascar, a source known for offering a wide palette from vivid blue to teal and parti colors, and the stone has been subjected to heat treatment, a stable and widely accepted enhancement that improves color uniformity and reduces silk to enhance eye clarity while preserving crystalline integrity.

Clarity is graded as slightly included when evaluated at eye level, with inclusions that are not obscuring to overall transparency but that do give an internal fingerprint typical of natural Madagascar material. These inclusions do not compromise structural stability, and they contribute to the gem s natural character and identification, particularly under magnification where internal growth features and occasional fine needles can be observed. From a setting perspective, the combination of a nearly 49 percent depth and the mixed brilliant cut makes this sapphire suitable for a variety of mounting styles that protect the girdle while allowing light into the crown, such as four prong, bezel with open back, or low profile collet designs, enabling the wearer to balance protection with maximum color display. The Natural Sapphire Company confirms the stone s heat treatment and origin as Madagascar, and we stand ready to provide detailed imagery and documentation on request, because in the market for sapphires of this hue and this size, genuinely saturated bluish green material is rare, and specimens that combine 1.80 carat weight, strong color, good transparency, and careful cutting are particularly uncommon.