3.03 Ct. Greenish Blue Sapphire from Madagascar

This sapphire is a transparent, natural corundum specimen weighing 3.03 carats, presented in an oval shape with precise dimensions of 10.40 x 7.33 x 4.72 mm, cut in a mixed brilliant style, and originating from Madagascar, The Natural Sapphire Company provides full provenance information for this stone. The color is a greenish blue with medium intense color intensity, a hue balance that reveals both cool blue and verdant green tones depending on viewpoint and light source. Clarity is graded as eye clean when evaluated at eye level, indicating that no inclusions are visible to the unaided eye under normal viewing conditions, and the polish is excellent, providing crisp facet junctions and a bright, reflective surface. There has been no enhancement applied to this sapphire, the color and clarity are entirely natural, and the combination of weight, dimensions and cut yield a stone that is both substantial and well proportioned for a variety of fine jewelry settings.

The narrative of formation for this gemstone begins millions of years ago in the dynamic geological environment of Madagascar, a region that has yielded a wide spectrum of gem quality corundum due to complex tectonic and metamorphic processes. In that deep time setting, regional metamorphism and localized contact metamorphism altered aluminous protoliths such as pelitic sediments and gneisses, concentrating aluminum under conditions of elevated temperature and pressure. Fluids enriched in aluminum and depleted in silica facilitated the crystallization of corundum rather than other aluminum bearing minerals, and where trace amounts of elements such as iron and titanium were present, they became incorporated into the corundum lattice, imparting the blue and green components of the color seen in this stone. Over millions of years, repeated episodes of deformation, fluid flow and recrystallization refined the crystal habit, producing well formed corundum that later weathered from its primary host and became concentrated in secondary alluvial deposits, from which it was recovered by modern mining.

At the lapidary stage, careful consideration was given to the orientation and cutting strategy to maximize the gem quality attributes of this particular rough crystal. The cutter chose an oval outline with a mixed brilliant cut, a design that combines a faceted crown and pavilion geometry to enhance scintillation and return of light while conserving carat weight. The finished dimensions of 10.40 x 7.33 x 4.72 mm reflect a balance between depth and table size, reducing the risk of light leakage or windowing while preserving weight and achieving pleasing proportions. The excellent polish indicates thorough and precise facet finishing, which minimizes surface scattering and allows the intrinsic color and clarity to be read with clarity. Because no heat treatment or other enhancements were applied, the visual characteristics are a direct expression of the stone as it formed and matured, and the mixed brilliant arrangement highlights natural color zoning where present, producing a dynamic, lively appearance under varied lighting.

From a practical standpoint this 3.03 carat oval Madagascar sapphire is suitable for a range of fine jewelry applications, most commonly as a center stone in a ring, a pendant, or a pair of bespoke earrings, where its eye clean clarity and medium intense greenish blue color will be appreciated. The size and proportions facilitate secure bezel or prong settings, with the 4.72 mm depth providing sufficient pavilion for light return and durability in daily wear. Care recommendations are conservative and straightforward, avoid exposure to strong acids or alkaline cleaners, remove the piece during strenuous activity to prevent impact, and use warm soapy water with a soft brush for routine cleaning, professional inspection and ultrasonic cleaning may be acceptable when advised by a qualified jeweler. This sapphire is offered with documented origin from Madagascar, and The Natural Sapphire Company stands behind the natural, unenhanced condition of this gem, providing the clarity, measurements and origin details as part of the gem record for informed decision making.