5.86 Ct. Bluish Green Sapphire from Madagascar

This GIA certified, natural, untreated Green Blue sapphire from Madagascar weighs 5.86 carats, and this substantial carat weight immediately communicates premium quality and presence. At 11.19 by 9.60 by 6.54 millimeters, the cushion shape offers a generous face up area, while the mixed brilliant cut balances classic cushion proportions with modern faceting to maximize return of light. The stone is transparent, graded as very very slightly included at eye level, and shows a dark color intensity with a bluish green hue that reads rich and sophisticated in jewelry. With an excellent polish and no enhancement, this sapphire represents a rare combination of size, clarity, color, and natural integrity, qualities that collectors and connoisseurs seek when purchasing a significant colored gemstone. The Natural Sapphire Company is proud to present this example as a top tier option for those who want the visual impact of nearly six carats without any trade off in authenticity or finishing.

When you compare this sapphire to other stones on the market, the most immediate advantage is its carat weight and how that weight translates to presence and value. Many sapphires offered at retail are smaller in carat weight, or they achieve face up size through shallower cutting that sacrifices depth and brilliance. Others may be similar in weight but have been color enhanced through heat treatment or fracture filling, which can affect both long term stability and resale value. This 5.86 carat example, accurately measured at 11.19 by 9.60 by 6.54 millimeters, retains depth and proportion that sustain brilliance, while the mixed brilliant cut distributes light dynamically across the table and crown. The very very slightly included clarity, evaluated at eye level, means that the stone will appear clean in everyday wear, unlike many stones that have visible inclusions or cloudiness that reduce sparkle. In short, you are getting a rare combination of a large, well cut, visually clean, and untreated sapphire, which places it well above standard market offerings where treatment and compromise on cut or clarity are more common.

Color and origin add another layer of distinction that affects desirability and comparative value. The bluish green hue, with dark color intensity, offers a sophisticated color that can play beautifully in a variety of settings, from classic solitaire rings to elaborate vintage inspired pieces. Madagascar has become known for producing sapphires with vibrant and unusual hues that differ from the more familiar cornflower blues of Sri Lanka or the velvety tones associated with Kashmir. This does not make it lesser, it makes it unique, and for a buyer seeking a stone that stands out, a natural, untreated Madagascar sapphire of this carat weight and clarity is particularly appealing. Because this stone is unenhanced, its color is stable and natural, which collectors value for authenticity and for assurance that the appearance will not change with time or wear. The GIA certification reinforces every aspect of the gem description, providing documented, independent verification of weight, cut, clarity description, color notes, and absence of enhancement, which is an important differentiator when comparing to many market stones that lack credible paperwork.

Choosing this sapphire from The Natural Sapphire Company means selecting a gemstone that is compelling as an investment, exceptional as a design centerpiece, and responsibly presented with full disclosure. At nearly six carats, the stone carries a physical presence that elevates any setting, and the cushion shape harmonizes with both contemporary and traditional designs, offering versatility that many similarly weighted stones lack when they are cut into less flattering proportions. The mixed brilliant cut and excellent polish ensure that light performance matches the promise of the stone on paper, delivering scintillation that a poorly cut, or overly included stone cannot match. Compared to treated alternatives, the no enhancement status increases rarity and long term desirability, while the documented clarity and GIA certification simplify confident purchasing and future resale. The Natural Sapphire Company curates gemstones to professional standards, and this sapphire exemplifies our focus on provenance, transparency, and cutting quality, making it an excellent choice for clients who want the assurance that comes with superior material and responsible sourcing. If you are deciding between stones, prioritize carat weight that reads well on the finger or pendant, look for certification that confirms untreated status, and choose a cut that preserves both face up area and depth, all qualities that this 5.86 carat Madagascar cushion sapphire delivers.