4.10 Ct. Green Sapphire from Ceylon (Sri Lanka)

From the folded basalt and gneiss of Ceylon Sri Lanka this green sapphire began its life as a grain of aluminum and trace elements caught in slow cooling crystals deep underground, and it carried with it the memory of monsoon rains and tropical earth as it grew over millions of years, layer by patient layer. Miners in the hill country unearthed the rough, a small, promising pebble shaped by nature and river, and that pebble traveled from village to workshop, arriving at The Natural Sapphire Company where our relationship with Sri Lanka has long been part of our story. We present a beautiful transparent green sapphire weighing 4.10 carats, cut to a cushion shape with overall dimensions of 11.00 x 8.36 x 4.72 mm, faceted with a mixed brilliant cutting style that balances sparkle and color. Its color intensity is dark, the polish is excellent, and it has been heat treated to stabilize and enrich its hue, a traditional enhancement that honors the gem while ensuring its long lasting beauty.

Beneath its eye clean surface lies a microscopic landscape that gives this sapphire an unmistakable signature, a private geography visible to those who choose to look a little closer. Under magnification you will discover a fine silk of rutile that threads through the interior, a delicate web that softens light and lends a satiny depth that is often celebrated in Ceylon sapphires. Minute mineral crystals sit like tiny islands, and occasional fingerprint like healed fissures trace the gem’s journey from rough to polished stone, records of pressure and the stone’s response to heat and time. These features do not detract from the gem’s clarity at eye level, rather they provide character, proving the stone is natural and telling a story that only nature could write, a signature that links this sapphire back to the soils and geological history of Sri Lanka.

The cutting and finishing of this sapphire were guided by a desire to reveal that story with every turn, employing a mixed brilliant faceting plan to harness both fire and color, and to make the most of the stone’s dark color intensity. The cushion silhouette was chosen to honor the rough’s natural shape, to preserve weight and to emphasize breadth across the table, so that the green can be admired in full without being overwhelmed by dispersion. Our cutters tuned each facet to produce an even distribution of tone and to coax out flashes of light that move with the gem, while the excellent polish ensures that those flashes meet the eye without interruption. Heat treatment was applied with care to refine the green and remove any brownish undertones common to some natural stones, a conventional enhancement technique that is widely accepted in the trade and fully disclosed. The result is a sapphire that is both wearable and rare, robust enough for a treasured ring yet possessing the intimate internal features that make it undeniably natural and individual.

Owning this green cushion sapphire from The Natural Sapphire Company is to hold a condensed landscape in your hand, a gem that connects you to the highlands of Ceylon and to centuries of gem cutting tradition. Its eye clean presentation makes it versatile for everyday jewelry, and its hardness and durability mean it will withstand a lifetime of wear with proper care. For the collector who values origin and narrative the microscopic inclusions act as a fingerprint, reassuring proof that this is a natural stone with a provenance that matters. We welcome you to examine this sapphire in person or through our detailed imagery and 360 degree viewing options, to bring a loupe as you wish, and to discuss setting styles that will best showcase the cushion outline and deep green tone. At The Natural Sapphire Company we stand behind every gem we offer, and we are honored to share the journey of this 4.10 carat Ceylon green sapphire from earth to heirloom.