4.73 Ct. Blue Sapphire from Ceylon (Sri Lanka)

There are places on earth where time and pressure conspire to create color in stone, and Sri Lanka stands among them. From the ancient metamorphic belts of Ceylon this transparent 4.73 carat radiant shape blue sapphire was coaxed into being over millions of years, born of mineral elements and fluid inclusions that gave each crystal a singular story. Local miners, whose families have worked these soils for generations, first found the rough, often in alluvial gravels carried down from the hills by monsoon rains. The gem arrived at our workshop still carrying the echo of that landscape, a medium light blue that holds the clear, cool character of early morning sky, and a transparency that lets light pass through and awaken the stone from within. Handling this sapphire, you can imagine the slow patience of formation, and you can feel the weight of its moment in time, a solid 4.73 carats that anchors its presence both physically and historically.

In the cutting room the narrative continued as a choice was made to cut this gem in a radiant shape that both honors the stone and maximizes its potential. The cutter measured every facet to balance brilliance and size, shaping the sapphire to final dimensions of 12.91 x 6.67 x 5.62 mm, a proportion that gives a generous face up area while retaining depth for color and sparkle. The clarity grade reads very very slightly included, evaluated at eye level, which means the stone looks essentially clean to the unaided eye while still carrying microscopic signatures of its origin that tell true gem stories. The polish is excellent, a finish that allows each facet to return light with crispness and to present the sapphire with a lively, satiny sheen. Importantly this gem has no enhancement, no heat treatment, no intervention that alters its natural hue or structure, a pure Ceylon sapphire in both origin and condition.

Weight is often spoken of in gemstones as carat, a tiny unit that carries outsized meaning, and here the 4.73 carat weight is central to this sapphire s value and rarity. In the market unheated sapphires from Ceylon in the 4 to 5 carat range are comparatively uncommon, and the combination of weight, transparency, and natural medium light color intensity elevates this gem beyond a mere accessory into the realm of a collector s piece or a signature center stone. The mass of 4.73 carats creates a presence that a smaller stone cannot convey, a face up area and heft that make the blue read boldly on the hand, while still remaining wearable for everyday or formal jewelry. From an investment perspective, larger natural unheated sapphires from respected origins tend to appreciate more steadily because supply is limited, and because weight increases are exponential in rarity. That is to say, a 4.73 carat sapphire is not simply a larger version of a one carat stone, it is a significantly rarer occurrence in nature and therefore commands a premium beyond its proportional size.

When you choose a gem through The Natural Sapphire Company you are tracing this sapphire s journey from Ceylon riverbeds to the precision of our lapidaries table, and then into your care. The stone s dimensions of 12.91 x 6.67 x 5.62 mm and its radiant cut lend themselves to a number of elegant settings, from an artful vertically set solitaire that emphasizes length and color, to a more classic cocktail ring configuration that plays up the 4.73 carat weight and face up area. The excellent polish and the very very slightly included clarity mean the gem will flash and sparkle in varied light, showing off the unheated medium light color intensity that collectors seek. We have documented its origin and enhancement status so that you own not only a beautiful object, but also the provenance and assurance that come with a responsibly sourced Ceylon sapphire. Owning this stone is to wear a piece of geological time, and The Natural Sapphire Company is honored to present it to you as both a rarity and a keepsake.