0.71 Ct. Bluish Green Sapphire from Madagascar

This oval bluish green sapphire weighs 0.71 carat and measures 6.60 x 4.86 x 2.50 mm, presenting a transparent, evenly cut profile with a mixed brilliant faceting scheme. The gem is graded as very very slightly included when evaluated at eye level, and it exhibits intense color saturation with an excellent polish that contributes to clean, reflective surfaces. This sapphire is unenhanced, retaining its natural character and clarity without heat treatment or other modifications, and its documented origin is Madagascar. The Natural Sapphire Company presents this stone as a precise example of fine corundum, combining measured proportions and skilled cutting to maximize both face up color and optical performance.

Color and optical behavior are central to this sapphire’s appeal. The hue reads as a balanced bluish green, with an intensity that remains vivid in both natural daylight and warm artificial light. The mixed brilliant cut places well proportioned crown facets over a pavilion designed for efficient light return, creating a lively interplay between scintillation and overall glow. Because the stone is transparent and has very minimal inclusions at face up inspection, light passes through the pavilion and reemerges with a clean, saturated face up color rather than being absorbed or scattered by internal features. The excellent polish further enhances this effect by minimizing surface diffusion and preserving crisp facet reflections, so the gem presents a lively, jewel like appearance rather than appearing dull or clouded.

When compared to more common gemstones the sapphire’s brilliance and presence are distinctive for several reasons. In refractive and dispersive terms corundum has a refractive index around 1.76 and limited dispersion relative to diamond, which has a refractive index around 2.42 and higher dispersion, so sapphires will not produce the same degree of spectral fire as a diamond. However the practical visual consequence is not a deficit but a different quality of brilliance. Where diamond delivers intense white light return and pronounced fire, this sapphire offers a deeper, color driven radiance, a uniform scintillation from well cut facets, and a saturated body color that contributes to perceived brightness. Against emeralds the difference is also instructive, since emeralds often display visible inclusions and less transparency which mute their brilliance, while this sapphire’s very very slightly included clarity and transparent nature allow for stronger light transmission and a cleaner face up appearance. Compared to aquamarine and topaz which have lower refractive indices near 1.57 and 1.62 respectively, this sapphire returns light with greater intensity and sparkle, so its apparent vivacity is greater in comparable sizes, especially because of its strong color saturation. In short the stone stands out not by producing greater fire than a diamond, but by combining focused light return, precise facet design, and intense natural color to achieve a composed and enduring brilliance.

Practical considerations for use and setting emphasize the sapphire’s adaptability and resilience. With a hardness of nine on the Mohs scale corundum is well suited to everyday wear in rings and other jewelry, offering superior scratch resistance compared with beryl family gems and many other colored stones. The oval proportions, at 6.60 by 4.86 mm with a depth of 2.50 mm, lend themselves to a range of settings from classic solitaire rings to halo or three stone designs, and they also make excellent center stones for pendants where the rich bluish green color can be appreciated at eye level. Because the gem is unenhanced and exhibits excellent polish, its natural beauty is preserved during setting and will be stable over time. If you require guidance on mounting options or wish to see complementary designs, The Natural Sapphire Company can assist with setting recommendations, secure mounting techniques, and professional photography to show how the stone will present in the intended finished piece.