1.53 Ct. Bluish Green Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape sapphire weighs 1.53 carats, and measures 7.22 x 5.49 x 4.46 mm. The stone has a mixed brilliant cut that balances faceting for lively return with a broad cushion outline to maximize face up color. The color is a bluish green with intense color intensity, and the polish is graded excellent. Clarity is assessed as very very slightly included at eye level, and the sapphire has been heat treated, a standard and stable enhancement for color and clarity. The material is Sri Lankan in origin, Ceylon, an established source for gems that combine clarity and vibrant tones. The Natural Sapphire Company has documented these characteristics following professional gemological evaluation and imaging.

The mixed brilliant cut promotes a dynamic interplay between the sapphire core and the pavilion faceting, producing a depth and scintillation that highlight the bluish green hue across viewing angles. Face up, the intense tone is evident without appearing overly dark, and the cushion outline yields a classic, wearable profile that suits both fine and contemporary settings. Under varied lighting the stone reveals subtle shifts in saturation where the faceting concentrates color toward the center, and where lighter pavilion facets allow flashes of cooler blue to appear. The excellent polish enhances these effects with crisp facet junctions and clean reflective surfaces, and the transparent body color allows for clear light transmission which benefits both brilliance and apparent size.

The most distinctive attribute of this sapphire is the internal array of inclusions that together form an unmistakable signature. At a microscopic level the stone contains fine needle like silk that is dispersed in delicate clusters, producing a silky veil in certain directions. These fine needles are oriented with crystal growth patterns, and they create a soft internal diffusion that moderates reflections and contributes to the gem appearing velvety in some facets. Interspersed among the silk are isolated crystal inclusions that act as pinpoint reflectors, adding minute bright flashes when struck by light. There are also subtle growth zoning banded into the crystal, visible as faint sectoral color differences that align with the crystal habit. In a few localized areas healed fissures and fingerprint type features are present, indicating natural stress history and subsequent recrystallization. None of these inclusions affect the integrity or durability of the sapphire for normal wear, and they are consistent with material from Ceylon, where such combinations of silk, minor crystals, and distinct growth zoning are commonly observed. Together these internal features give the stone a fingerprint that is individual, allowing connoisseurs and gemologists to appreciate the gem as a natural object with a documented formation history rather than a homogenized material.

For practical use and design, this sapphire is well suited as a refined center stone for a ring or pendant where its compact dimensions and intense bluish green tone can be shown to advantage. The mixed brilliant cut and excellent polish provide reliable symmetry and light performance for faceted mounting, while the very very slightly included clarity grade ensures that the defining inclusions remain subtle rather than distracting. The heat treatment applied is a conventional enhancement used to stabilize and intensify color, and this treatment is noted in our documentation. The Natural Sapphire Company can provide further gemological reporting upon request, and our gemologists can advise on settings that emphasize the stone core and its internal character. This sapphire is best appreciated by close inspection under both natural and artificial lighting, where the interplay of silk, pinpoint crystals, and zoning becomes apparent, creating a lively and unmistakable signature that is characteristic of fine Ceylon material.