0.58 Ct. Bluish Green Sapphire from Madagascar

This transparent 0.58 carat oval bluish green sapphire presents precise dimensions of 5.58 x 4.27 x 2.90 millimeters, and it has been cut in a mixed brilliant style to balance fire and color. The gem carries a clarity grade of very slightly included when evaluated at eye level, indicating minor internal characteristics that do not affect overall transparency or appeal to the unaided eye. Color is described as bluish green with medium intensity, a balanced saturation that allows both the blue and green aspects to remain evident without overpowering each other. The finish is of excellent polish, which contributes directly to surface brightness and tactile smoothness. The sapphire originates from Madagascar, and it has been heat treated, a common and stable enhancement that refines color and clarity while being widely accepted within the trade.

The mixed brilliant oval cut blends a faceted crown with pavilion facets designed to optimize light return and internal reflections, producing both broad flashes and lively scintillation with movement. The oval outline delivers a versatile footprint for many jewelry settings, providing a slightly elongated face up presentation that can visually lengthen a finger when set in a ring. With the specified table and pavilion proportions implied by the measurements, the stone maintains a pleasing balance between depth and spread, preserving a strong face up presence for its 0.58 carat weight. Very slightly included clarity means that inclusions are small, sparse, and generally visible only under magnification or concentrated scrutiny, therefore the gem reads as clean to the unaided eye in everyday viewing. Excellent polish reduces light leakage at the surface, improving contrast and promoting crisp facet junctions that enhance overall sparkle.

Under different lighting conditions this sapphire demonstrates distinct but predictable behavior due to its color balance, clarity, and cut. In bright daylight, particularly open shade or northern light that has a cool spectrum, the bluish component becomes more prominent, producing a fresh teal impression with crisp, bright reflections from the mixed brilliant facets. The medium color intensity allows daylight to reveal internal depth without appearing overly dark, so the stone exhibits clear, lively flashes and a cool bluish green tone that reads true to its description. Under warm incandescent light the green component tends to warm slightly, shifting the appearance toward a softer sea green, while the sapphire retains good brilliance because the excellent polish and precise facet arrangement continue to return light effectively. In cooler artificial light sources, such as many white LEDs or fluorescent lighting, the stone often displays enhanced contrast between bright facet flashes and the body color, causing the bluish hues to stand out against the green, and producing a pleasing two tone effect that is noticeable as the gem moves.

When viewed under directional or spotlighting, such as in jewelry display lighting or in evening wear with focused light, the mixed brilliant cut produces pronounced scintillation and pinpoint flashes that animate the surface, creating lively movement and eye catching sparkle. The oval shape encourages a combination of broad flash patterns across the table and smaller scintillation around the girdle and crown facets, which together create a dynamic visual performance as the wearer moves. Because the sapphire is transparent and of medium saturation, it will not appear overly dark in lower ambient light, unlike deeper saturated stones, however the perceived color will be subtler and may lean toward its greener or bluer tendencies depending on the local light spectrum. Pleochroic tendencies in blue green sapphires can produce slight directional color variance when the stone is rotated, which is most obvious under polarized or highly directional lighting, and this property can be used intentionally in the design stage to align the strongest color face up or to create an active appearance that changes with movement.

This sapphire from Madagascar offers a combination of practical attributes and aesthetic versatility, making it suitable for a variety of settings and jewelry types. The heat treatment is stable and standard practice, and the stone should be set with basic precautions appropriate for corundum, including protective setting choices for rings that receive daily wear. The Natural Sapphire Company stands behind clear documentation of origin and treatment, and this gem is consistent with our approach to offering gemstones that are transparently described and accurately represented. For clients seeking a gem that balances subtle color complexity, reliable brilliance, and a refined finish, this 0.58 carat oval bluish green sapphire offers an attractive option, with predictable and approachable light performance across daylight, warm incandescent, and artificial lighting environments.