0.83 Ct. Blue Sapphire from Ceylon (Sri Lanka)

One beautiful transparent 0.83 carat round shape blue sapphire from The Natural Sapphire Company is presented with precise proportions and classic appeal. The stone measures 6.00 by 5.98 by 3.12 mm, and it has a mixed brilliant cut that marries the scintillation of a brilliant style with the color return of a step influenced girdle and pavilion arrangement. At the eye level clarity grade of very slightly included, the gem reads as clean to the naked eye with only minute internal features that are visible under magnification. The intense color intensity and excellent polish together produce a lively visual performance, while the overall depth, approximately 52 percent of the average diameter, supports strong light return and an even face up appearance. This sapphire is natural in origin and has been heat treated, a widely accepted enhancement used to stabilize and intensify color, and The Natural Sapphire Company discloses this treatment openly as part of our commitment to ethical and transparent gem trade practices.

Color is the primary determinant of value for blue sapphires, and this Ceylon gem exhibits a deep, vivid blue with a slight cool undertone that leans toward classic cornflower to royal blue. Compared to Kashmir sapphires, which are prized for a velvety, almost silk like cornflower blue and a softer, more diffuse light scattering, this Sri Lanka stone is brighter and more crystalline, showing a livelier sparkle and a slightly higher apparent saturation in bright lighting. Against Burmese or Pailin sapphires, which often carry a saturated royal blue that can be very deep and rich in tone, this Ceylon example is a touch lighter in tone but retains intense saturation, creating a jewel that reads as both vibrant and open. When compared to Australian sapphires, which frequently present darker, inky blue tones with a subtle green bias, the Ceylon sapphire here appears cleaner and more vivacious, with less tendency toward a murky or velvety look. Madagascar sapphires can vary widely, sometimes matching the vividness of Sri Lanka stones and sometimes trending toward deeper or more violet shifting hues. This particular stone sits in the premium sweet spot for Ceylon material, delivering intense blue without crossing into an overly dark tone, which enhances its versatility for different mounting styles and metal choices.

For the educated buyer, clarity, cut quality, and treatment disclosure are as important as hue and tone, and this sapphire performs well on all of those counts. The very slightly included clarity grade at eye level indicates that the stone is essentially eye clean, with internal features that do not detract from the face up color or brilliance, and which in some cases can even act to diffuse light in an attractive way. The mixed brilliant cut has been executed with care, offering balanced facet junctions and an excellent polish that maximize scintillation and color uniformity, which are critical in smaller stones where poor cutting can deaden color or produce windowing. Heat treatment has been applied to enhance the blue tone and to reduce unwanted color zoning. This is a standard practice in the trade, and when performed correctly, as it has been in this instance, it results in a stable, durable color that will not fade with normal wear. In comparison to classic Kashmir material, this Ceylon gem shows more sparkle and a brighter personality, while relative to typical Burmese pieces it may offer a slightly more open, lively face up appearance, making it particularly attractive for rings and pendants where light interaction is frequent.

Beyond the immediate gemological specifications, the combination of attributes found in this 0.83 carat round sapphire explains why it holds appeal for collectors and fine jewelry buyers. The carat weight is a practical and desirable size for a single stone engagement ring, or as a matched accent in a more complex design. The intense color, coupled with eye level cleanliness and excellent polish, provides a visual impact that exceeds what one might expect from similar sized material in many other origins. The Ceylon provenance contributes to the gem story, as Sri Lanka has a long history of producing lively, highly saturated blues that are favored for their clarity and brightness. For buyers who appreciate regional differences, this sapphire offers a classic Sri Lankan expression of blue, sitting comfortably between the velvety allure of Kashmir and the deep saturation often found in some Burmese pieces, while avoiding the darker, more green biased appearance typical of some Australian sapphires. At The Natural Sapphire Company we supply exacting descriptions and full disclosure of origin and treatment, and we can provide additional gemological documentation on request, along with advice on settings that will best showcase this stone, such as bright white metals for contrast, or warmer alloys to deepen the perceived tone.

In practical terms this sapphire is durable, attractive, and a conscientious choice for anyone seeking a natural, heat treated Ceylon blue that offers both investment value and daily wear suitability. Corundum is one of the hardest gem materials, second only to diamond, and the excellent polish and precise cut here ensure that the stone will retain its beauty through years of wear when mounted responsibly. The Natural Sapphire Company stands behind the provenance and the quality assessment of this gem, and we invite discerning customers to consider the stone for bespoke projects or ready made settings, where its intense blue, measured proportions, and eye clean presentation will translate into a refined, enduring piece of jewelry. If you seek a sapphire that communicates both classic Ceylon character and modern cut performance, this 0.83 carat round mixed brilliant sapphire represents a balanced and informed choice.