0.91 Ct. Green Sapphire from Ceylon (Sri Lanka)

This 0.91 carat cushion shape green sapphire presents as a technically refined gem, with precise measurements of 5.77 x 5.07 x 3.68 mm and a depth percent of approximately 68 percent, a proportion that strikes a deliberate balance between color saturation and light return. The cutter employed a mixed brilliant faceting scheme, combining a brilliant crown to maximize scintillation and a modified pavilion to preserve weight and enhance face up color, thereby creating a lively interplay between sparkle and depth. The table and crown facets are calibrated to optimize internal reflection for a gem of this hue, minimizing windowing while avoiding extreme extinction that can mute the saturated green. Transparency is excellent, and the clarity is graded as slightly included at eye level, indicating minor natural inclusions that do not significantly interrupt brilliance but do provide a fingerprint of natural origin, and the polish has been executed to an excellent standard, delivering sharp facet junctions and pleasing brilliance under direct light.

Color is the defining attribute of this stone, with intense color intensity that reads as a saturated, medium deep green with subtle secondary blue tones when viewed at varied angles, a characteristic that is consistent with fine Sri Lankan sapphires. The origin from Ceylon provides a known geological signature, where gem absorption and trace element chemistry frequently yield vibrant yet complex tones, and the mixed presence of iron and titanium, with possible trace chromium, contributes to the green palette and to the stone's pleochroic behavior. Heat treatment has been applied, a well established enhancement in the trade that stabilizes and intensifies color while reducing the visual impact of fine silk and other internal features, making the stone more uniform and attractive without compromising structural integrity. The slight inclusions that remain serve as natural identifiers for connoisseurs and do not detract from the overall transparency and light performance, especially when the gem is set to take advantage of its polished crown and carefully proportioned pavilion.

Owning this green cushion sapphire is an investment in both aesthetic refinement and artisanal skill, as the piece exemplifies considered cutting decisions that harmonize optical performance with preservation of carat weight and natural character. From a craftsmanship perspective, the mixed brilliant design is chosen to exploit the stone's intense saturation while maintaining lively scintillation, an approach that signals a cutter who understands how facet geometry influences perceived depth and color saturation. For investors and collectors who value provenance, the Ceylon origin and documented heat treatment are important factors that support market confidence, and the corundum hardness of nine on the Mohs scale assures durability for daily wear in rings and pendants, which in turn protects long term value. Design recommendations include settings that expose the pavilion and crown to light for maximum fire, and metals such as 18 karat yellow gold or platinum that offer complementary contrast and security, while bezel settings may be chosen to protect the girdle without overly reducing light entry.

At The Natural Sapphire Company we emphasize transparency in our gemstone descriptions and stand behind the technical attributes of each stone, providing additional imaging and measurement data on request to support professional evaluation and appraisal. Whether acquired as a single center stone for a bespoke engagement piece, incorporated into a more complex designer work, or held as a collectible asset, this 0.91 carat Ceylon green cushion sapphire represents a measured investment in natural beauty and meticulous lapidary craft, a stone that rewards both the eye and the informed buyer who appreciates the subtle balance of cut, color, clarity, and treatment that defines superior sapphires.