12.18 Ct. Greenish Blue Sapphire Crystal from Ceylon (Sri Lanka)

This natural sapphire is a substantial and attractive example for a collector or someone commissioning a bespoke piece, weighing 12.18 carat and measuring 22.45 x 9.78 x 7.62 mm. The stone presents a various shape with a rough crystal cut, and a semi translucent body that shows a pleasing greenish blue hue with medium intense color intensity. The color reads as a true Ceylon palette, with lighter blue notes blended with green undertones that enrich its visual complexity when viewed from different angles. The cut is left in a rough crystal form which preserves much of the stone material and shows the crystal habit and natural terminations. Despite the rough presentation the surface condition is described as an excellent polish on exposed faces, which enhances luster and gives a clear view into the sapphire where translucency permits. For buyers comparing dimensions to weight this specimen offers generous carat weight relative to its linear measurements, which makes it well suited to dramatic settings or as a study piece for lapidary work.

The clarity grade is very slightly included, evaluated at eye level, which is a meaningful and favorable grade for a sapphire of this size and origin. Very slightly included at eye level indicates that inclusions are present but minimal and not distracting to the unaided eye under normal viewing distances, so the stone maintains good transparency in areas and attractive depth of color without obvious blemishes. In Ceylon sapphires tiny rutile needles, crystal pockets, or faint veils are common inclusion types, but they can also contribute to character and to optical effects like a soft glow or silkier appearance. From a durability standpoint these inclusions do not present significant cleavage or instability, so the gem is appropriate for secure settings with typical day to day wear. The rough crystal cut means a lapidary could preserve weight for collectors or rework the material into a faceted stone or a cabochon depending on how color and translucency respond to shaping. Because the stone is semi translucent rather than fully transparent, a cabochon or deep step cut could maximize color saturation, while skilled faceting could reveal internal reflections where translucency allows.

The origin of this sapphire is Ceylon Sri Lanka, an origin with a long storied reputation for producing sapphires with lively blue to greenish blue tones and excellent crystal structure. Provenance from Ceylon adds a layer of desirability for educated buyers because the geological conditions there produce stones with attractive pleochroism and color complexity, attributes that collectors and connoisseurs specifically seek. Importantly this sapphire has no enhancement, which materially increases its market value and desirability among buyers who prioritize natural material and untreated color. No enhancement means the color and clarity are natural, so the stone will retain its natural character over time and commands a premium relative to heat treated or otherwise modified material. At The Natural Sapphire Company we emphasize transparent disclosure of origin, treatment history, and cut characteristics because these factors determine both aesthetic potential and long term value. For a buyer considering this piece as an investment or as the centerpiece of a custom commission we recommend a formal gemological report to document its untreated status and origin, and we can assist with options for cutting, mounting, or leaving the specimen in its natural crystal form for display. Overall this greenish blue 12.18 carat Ceylon sapphire combines an appealing size, pleasing color, and natural condition, making it a valuable choice for collectors, designers, and buyers seeking an authentic and characterful sapphire.