1.66 Ct. Green Sapphire from Ceylon (Sri Lanka)

This one of a kind, transparent green sapphire weighs 1.66 carats and is presented in a radiant shape with precise dimensions measuring 7.50 by 6.95 by 3.20 millimeters, a radiant cut that combines trimmed corners with a brilliant facet pattern to deliver strong light return and a contemporary profile. Graded as slightly included when evaluated at eye level, this stone is notable for its excellent polish and absence of any enhancement, a rarity among natural sapphires on the market. Originating from Ceylon, Sri Lanka, the gem displays a medium color intensity that reads as a soft, refined green in daylight and under jewelry lighting, with a clarity that allows the stone to read clean to most viewers while retaining natural internal characteristics that confirm its authenticity. The Natural Sapphire Company presents this sapphire as an untreated example of Ceylon craftsmanship from the earth, a piece that will appeal to buyers who prioritize natural provenance and transparent treatment disclosure.

From a gemological perspective the most relevant attributes for an educated buyer are the cut geometry, the clarity grade, the color distribution, and the optical finish. The radiant cut employed here is tuned to enhance both brilliance and face up size, the step of the pavilion and the crown facet arrangement yielding a lively pattern that maximizes perceived spread for a 1.66 carat weight. When measured against the average of its length and width the depth calculates to approximately 44 percent, producing a slightly shallow profile that makes the stone wear larger on the finger and sits comfortably within lower profile settings. Slightly included clarity indicates visible inclusions under close inspection at normal viewing distance, inclusions that do not compromise stability or durability, and which are often masked elegantly by well considered mounting choices. The excellent polish ensures that light transmits and reflects cleanly through the stone, enhancing scintillation and color saturation without the interference of surface abrasions.

This sapphire adapts gracefully to a wide range of custom jewelry settings, making it especially attractive to designers and clients seeking versatility. In a classic solitaire ring the radiant outline reads modern and elegant, the trimmed corners offering protection against catches while allowing four or six prongs to secure the stone. A halo setting with small brilliant cut diamonds will increase perceived size and accentuate the green hue by contrast, while a three stone composition with tapered baguettes or oval side stones can create a refined, architectural effect. For everyday wearers the sapphire is well suited to a bezel or partial bezel setting that follows the stone perimeter for extra security and to minimize exposure of the slightly included areas, this approach also complements the shallower depth by creating a continuous metal edge. East west orientations, split shank rings, and low profile tension or flush mountings are all viable, particularly because the excellent polish and radiant cut deliver a stable optical presentation in both horizontal and vertical settings. Beyond rings, the gem makes a luminous center for a pendant or pair of stud earrings, and it can anchor a bespoke bracelet link when set with precision collars to distribute stress away from the girdle.

For the discerning buyer the combination of an untreated Ceylon origin, a transparent medium green, and meticulous finish provides both aesthetic and investment rationales. Ceylon sapphires have long been prized for their clarity and lively, oceanic tones across blue and green varieties, and an unenhanced green sapphire from this region carries provenance value that informed collectors respect. Slightly included stones often represent better value for the budget conscious client who wants natural character without sacrificing eye visible beauty, and because this gem is unheated and unenhanced it will retain market desirability among buyers who prefer untreated material. The Natural Sapphire Company sources ethically and can provide documentation and imagery to support origin claims and treatment disclosure, helping to ensure confidence in provenance for custom commissions. For care, we recommend standard sapphire maintenance, periodic professional cleaning to remove mounting residue, avoidance of harsh chemical exposure, and routine checks of prongs and settings to preserve the integrity of a custom piece. If you would like design suggestions, setting options, or CAD visualizations, our specialists at The Natural Sapphire Company are available to help translate this beautiful radiant green sapphire into a bespoke ring, pendant, or set of earrings that highlights its best qualities, and to advise on metal choice and complementary stones to achieve the precise look and durability you desire.