1.00 Ct. Greenish Blue Sapphire from Madagascar

This transparent greenish blue sapphire weighs 1.00 carat, and it is presented in a fancy shape with dimensions of 6.08 by 5.88 by 3.37 millimeters. The gem exhibits intense color intensity, a clarity grade of very slightly included, evaluated at eye level, and an excellent polish. The cut is described as fancy, designed to balance face up size and light return, and the stone has been heat treated, a stable and widely accepted enhancement for color optimization. The origin of the sapphire is Madagascar, a source known for producing richly saturated corundum specimens. The Natural Sapphire Company offers this stone with full specification data to allow informed assessment of its optical and physical qualities.

The proportions of this stone contribute directly to its visual performance, and the measured depth of 3.37 millimeters in relation to the average table diameter yields a well balanced depth percentage that supports both color depth and light return. The fancy cut affords a greater face up presence than a simple round of equivalent weight, while the facet architecture and excellent polish create crisp reflections and controlled light leakage. Clarity described as very slightly included, evaluated at eye level, indicates small internal features that have limited impact on transparency or durability when viewed unaided, while loupe inspection will reveal the inclusions without compromising the gem s overall appeal. The combination of high transparency and intense saturation produces a vivid face up color, and the heat treatment is confined to improving color without detracting from the structural integrity of the corundum.

Optical behavior varies with lighting, and this sapphire displays a consistent, appealing range of tones as conditions change. Under natural daylight, especially in north facing or diffused daylight, the greenish blue character reads as a vivid teal, with the blue component remaining prominent and the green component adding a fresh, lively nuance. In direct sunlight the stone will display strong saturation, deeper body color, and marked contrast between bright facet reflections and darker color zones, leading to pronounced scintillation. Under warm incandescent illumination or candlelight the warmer spectrum tends to emphasize the greenish component slightly, producing a softer, warmer teal that retains intensity without washing out. Under cool white LED or fluorescent lighting the blue component gains presence, yielding a crisper, cooler impression of color which can be particularly striking in contemporary metal settings. The fancy cut and excellent polish ensure that facet reflections remain bright across different lights, and the stone may show subtle pleochroic shifts between green and blue when rotated, a characteristic of many sapphires that adds dynamic interest to its appearance.

From a practical and provenance perspective this sapphire benefits from the inherent hardness and chemical stability of corundum, making it a suitable choice for daily wear with appropriate setting and care. Heat treatment is a well established practice that stabilizes and intensifies color, it does not require special handling beyond standard care for fine colored gemstones. Choice of mounting will influence perceived color, with white metals tending to emphasize the cooler blue aspects, and yellow or rose metals softening the appearance and accentuating the greenish undertone. For cleaning, warm soapy water and a soft brush are effective, and professional ultrasonic or steam cleaning is acceptable in most cases for heat treated corundum, though an assessment by a jeweler is recommended if visible inclusions are a concern. The Natural Sapphire Company provides this sapphire with clear documentation of its measurements, treatment, and origin, and the stone offers a combination of vivid color, transparent clarity, and refined cutting that will present attractively under a wide range of lighting environments.