0.58 Ct. Green Sapphire from Madagascar

From the moment this green sapphire left the earth, it carried with it the story of Madagascar, an island whose soils and rivers have for generations yielded fine corundum crystals. This particular stone is a transparent, emerald cut green sapphire weighing 0.58 carat, its exact measurements 5.97 by 4.23 by 2.47 millimeters, its color described with a medium intensity that shows green hues with depth and life. Evaluated at eye level, its clarity grade is very very slightly included, a level of clarity that reads as clean to the naked eye while retaining tiny internal fingerprints that tell of its natural birth. The cut is an elegant emerald cut with step facets and crisp corners, and the polish is excellent, allowing light to glide across its planes with a cool, architectural shimmer. The stone has been heat treated, a standard and stable enhancement that deepens and evens the color, and every aspect of its selection and preparation has been curated and inspected by The Natural Sapphire Company to honor both the gem and the story it carries.

The journey from rough to jewel began with miners in Madagascar tracing veins of corundum in alluvial gravels and primary deposits, where months or even years of slow geological pressure coaxed aluminum oxide into gem quality sapphire. Our cutters then read each crystal like a map, choosing an emerald cut to emphasize clarity and color rather than maximize weight, a decision that translates into the long, reflective facets you see now. The emerald cut gives this green sapphire an elegant, vintage feel while its proportions, five point nine seven by four point two three by two point four seven millimeters, ensure it sits beautifully in a delicate setting. Because the stone is very very slightly included and has excellent polish, the step facets create broad flashes of color and subtle internal depth rather than pinpoint sparkle, a sophisticated look especially appealing to those who prefer understated refinement. Heat treatment was applied with care, a controlled process that stabilizes and enhances the natural green tones found in corundum from Madagascar, it is a treatment fully disclosed and commonly accepted in the trade, and it leaves the stone both more vivid and reliably enduring.

Durability is one of the sapphire family’s greatest virtues, and this Madagascar green sapphire is exceptionally well suited to daily wear. As corundum, sapphire rates nine on the Mohs hardness scale, second only to diamond, which means it resists scratching from almost every common material encountered in day to day life. Sapphires do not have perfect cleavage, and their toughness is such that well set stones withstand the knocks and bumps of frequent wear far better than many other gems. The stability of the heat treatment used on this stone is well established, so the color and integrity remain intact through normal cleaning and exposure to light. For everyday jewelry like an engagement ring, a bezel or low protective prong setting will preserve the clean lines of the emerald cut and shield the stone’s edges, though the cut itself with its truncated corners also helps reduce chipping risk. Routine care is simple, a gentle warm soapy water bath and a soft brush to clear oils and dust will keep the surface glistening, and professional cleaning and inspection from time to time will ensure the setting remains secure. At The Natural Sapphire Company we always recommend considering the lifestyle of the wearer when choosing a mounting, and we stand behind this green sapphire as a durable, beautiful choice that tells both a geological and human story, a jewel ready to be worn every day while carrying the calm green heart of Madagascar with it.