1.38 Ct. Green Sapphire from Madagascar

This exceptional transparent 1.38 carat cushion shape green sapphire measures 6.86 x 5.98 x 4.06 mm, and it is presented by The Natural Sapphire Company with full disclosure of its key characteristics. The gem has a mixed brilliant cut, which combines a step style crown and a brilliant style pavilion to maximize light performance while preserving weight and shape. Its clarity is graded as slightly included when evaluated at eye level, meaning small natural inclusions are present but they do not materially detract from the stone s overall transparency or its ability to sparkle. The color shows vivid intensity, a rich green with balanced tone and saturation that reads strongly in both daylight and incandescent lighting. The polish is excellent, with smooth mirror like facet surfaces and crisp facet junctions, and importantly this sapphire is unenhanced, remaining in its natural state as extracted from Madagascar. For the educated buyer who values provenance, the Madagascar origin is significant, as that region produces sapphires with attractive colors and modern responsible sourcing practices.

Understanding why this stone sparkles so effectively begins with corundum s inherent optical properties and continues through the cutter s choices. Corundum has a relatively high refractive index approximately 1.76 to 1.77, and modest birefringence approximately 0.008 to 0.010, which together allow strong internal reflection and lively facet contrast without excessive doubling. The mixed brilliant cut on this cushion shape places a well proportioned crown and table to capture incoming light, and a finely faceted pavilion to reflect that light back with scintillation and flash. The cushion outline with softened corners enhances the perception of depth, so flashes of vivid green appear to move across the surface as the stone or the wearer moves. Excellent polish ensures that the light meets glass smooth facets and returns cleanly, rather than scattering on rough surfaces, and the gem s dispersion while low compared with diamond still contributes subtle spectral flashes when the cutting proportions favor balanced crown angles and precise facet geometry.

For a thoughtful collector or a discerning client designing a bespoke piece, this 1.38 carat unenhanced green sapphire offers a compelling combination of color, clarity, and cutting that commands attention while offering long term value. The Madagascar provenance adds context around geology and supply, and the absence of heat or other enhancements increases rarity and market preference among connoisseurs. Slight inclusions noted at eye level are consistent with a natural corundum and often serve as a fingerprint of origin, without materially reducing the gem s sparkle or wearability, particularly given the stone s cushion shape and mixed brilliant cut which conceal and distract from minor internal features with dynamic light play. The Natural Sapphire Company stands behind the gem s description and is happy to provide additional details about cutting proportions, viewing images under different lighting conditions, and guidance on settings that will best showcase the stone s vivid green hue and exceptional light return.