0.71 Ct. Yellow Sapphire from Madagascar

This beautiful transparent 0.71 carat oval yellow sapphire measures 6.12 millimeters by 5.14 millimeters by 2.64 millimeters, and it has been expertly fashioned with a mixed brilliant cut that balances scintillation and windowless face up color. The gem is graded very slightly included at eye level, a clarity that indicates only minor internal features which do not detract from visual appeal or light performance. The color is classified as intense, offering a vivid warm yellow that remains consistent across viewing angles, and the polish is excellent, giving mirror like facet surfaces that maximize light return. This sapphire has been heat treated, a stable and widely accepted enhancement that intensifies hue and improves transparency, and it originates from Madagascar, a source known for producing well colored and structurally sound corundum. At The Natural Sapphire Company we present this stone with high resolution imagery and full provenance notes, so an educated buyer can evaluate its optical and physical characteristics with confidence.

What sets this sapphire apart for a discerning buyer is the combination of corundum chemistry and precision cutting that creates sparkle beyond mere color. Sapphires are crystalline aluminum oxide in the trigonal system, a dense lattice that gives them a high refractive index in the range of about 1.762 to 1.770, and a modest dispersion around 0.018. Those optical constants make corundum exceptionally efficient at bending and returning light, and when paired with a mixed brilliant cut the result is abundant brilliance and dynamic scintillation. The cut alternates small brilliant facets on the crown with broader pavilion facets, directing light into intense flashes and breaking it into subtle spectral flashes. Birefringence of approximately 0.008 to 0.010 can add depth and internal contrast, enhancing the perception of sparkle without creating unwanted doubling in this well cut stone. The very slightly included clarity grade means inclusions are minimal and typically pale compared with the intense body color, so light is able to travel through the gem with minimal interruption. For collectors and fine jewelry clients who value durability, provenance, and optical performance, this 0.71 carat Madagascar yellow sapphire from The Natural Sapphire Company combines excellent polish, precise cutting, and proven enhancement practices to deliver outstanding visual impact and long term value.