0.61 Ct. Bluish Grey Spinel from Ceylon (Sri Lanka)

This 0.61 carat cushion shape spinel presents as a finely proportioned gemstone, measuring 5.43 x 4.68 x 2.57 mm, faceted to precise tolerances to maximize optical performance. The cutting style is faceted with a mixed brilliant cut, combining a brilliant facet arrangement on the crown with a modified pavilion geometry to enhance return of light and scintillation. The bodycolor is a restrained bluish grey with light color intensity, offering a cool, sophisticated hue that reads consistently across viewing angles. Transparency is high, the material being essentially transparent rather than translucent, and the surface finishing is of excellent polish, producing crisp facet junctions and clean facet reflections. Enhancement has been assessed and none was applied, the gem remaining in its natural state from extraction to cutting, and its origin is documented as Ceylon, Sri Lanka, a provenance noted for producing spinel material with fine color and clarity characteristics.

From a cutting and optical engineering perspective, the mixed brilliant treatment on this cushion form leverages a shallow to moderate crown paired with a pavilion that adopts both brilliant and step elements, a configuration that promotes strong internal reflections while controlling windowing and extinction. The crown facet topology emphasizes kite and star facets radiating from a relatively balanced table, contributing to evenly distributed brilliance across the stone face. The pavilion modifications create additional small facets that act to scatter light and modulate the stone s scintillation pattern, yielding activity that is lively without appearing overly flashy. The excellent polish enhances facet transparency and sharpness, reducing surface diffusion and allowing the inherent refractive behavior of spinel to manifest fully. Clarity is graded as very very slightly included at eye level, indicating minute internal features that are hardly perceptible to the unaided eye, therefore preserving both the visual purity and optical return of the cut.

Durability is a key consideration for wearability, and spinel scores well on that metric. On the Mohs scale of mineral hardness spinel registers at 8, placing it above common jewelry minerals such as quartz which rates at 7, and directly below corundum which rates at 9, while diamond remains at the top with a rating of 10. This hardness means the gem is resistant to everyday abrasion and scrubbing, more resistant than many gemstones commonly set in jewelry, yet not impervious to scratching by harder materials such as corundum and diamond. In practical terms this spinel is well suited for frequent wear settings including rings and bracelets, provided prudent care is observed. In addition to hardness, spinel is isometric and generally lacks cleavage, factors that contribute positively to toughness and resistance to fracture under impact. For daily wear I recommend secure mounting such as a partial bezel or protective prongs that cover vulnerable girdle points, and professional cleaning using mild detergents and ultrasonic methods only after consultation, given the no enhancement status which makes the stone sensitive to unnecessary heat or aggressive treatments.

Provenance and market positioning further enhance the appeal of this stone. Ceylon spinel is sought after for its combination of attractive hue, crystalline clarity, and classic gemstone character, and the absence of enhancement increases its appeal to collectors and connoisseurs seeking natural material. The measured dimensions 5.43 x 4.68 x 2.57 mm and the 0.61 carat weight make this gem versatile for custom jewelry, whether as a solitaire study in proportion on a delicate mounting, as a complementary stone in a halo setting, or as the center of a bespoke design where its mixed brilliant facet regimen will interact with accent stones. The Natural Gemstone Company stands behind the accuracy of the description and the integrity of the material, and we can provide additional imaging, lighting angle studies, and optional independent laboratory assessment on request for clients requiring formal documentation. Given the combination of precise cutting, excellent polish, natural unenhanced state, and documented Sri Lankan origin this cushion spinel represents a technically refined choice for buyers who prioritize gemological precision and long term wearability.