1.50 Ct. Spinel from Ceylon (Sri Lanka)

This listing presents a rare and elegant 1.50 carat transparent blue spinel in a radiant shape, with precise dimensions of 7.22 x 5.22 x 4.43 mm. The stone exhibits a light color intensity that reads as a refined, steel to cornflower blue under daylight, and it has been expertly fashioned into a radiant cut to maximize both brilliance and the perception of size. The clarity is graded as very slightly included, evaluated at eye level, which for practical purposes means the gem appears clean to the naked eye with only minor internal characteristics visible under magnification. The polish is excellent, producing clean facet junctions and crisp reflections, and the gem has not received any enhancements, leaving it in its natural condition. Origin is Ceylon Sri Lanka, a source historically celebrated for producing spinels and sapphires of exceptional clarity and tonal quality. For collectors and connoisseurs seeking documented provenance and natural material, The Natural Gemstone Company is offering this gem as an unheated, untreated example of Ceylon blue spinel.

From a gemological perspective this spinel carries attributes that appeal to the informed buyer. Spinel is an isometric crystal, which means it is singly refractive and does not show the doubling of facet images that can occur in anisotropic materials. Its refractive index falls in the range of approximately 1.712 to 1.736, producing a lively but slightly softer brilliance than corundum, and its specific gravity is around 3.60, which contributes to a pleasing weight and heft for its size. The Mohs hardness is about 8, which makes spinel very suitable for everyday wear in rings as well as in pendants and bracelets, provided routine care is observed. The radiant cut used here blends step and brilliant faceting, delivering an efficient return of light while preserving a rectangular outline that suits modern and classic settings alike. The excellent polish enhances light return and contrast, and the dimensions combined with a 1.50 carat weight make the gem an ideal candidate for a centerpiece solitaire or a halo setting that highlights the soft blue tone without overwhelming it.

Historically, spinel has enjoyed a place among the most storied gems in royal collections, and comparisons illuminate the particular virtues of this stone. Notable examples such as the Timur Ruby and the gem known as the Black Prince ruby, both of which are spinels, illustrate that spinel has been prized for centuries and often mistaken for corundum because of its deep, saturated color and durability. Those historical spinels tend to be red, and the rarity of intensely colored blue spinel sets pieces like the present stone apart. When compared with famous sapphires such as the Logan Sapphire or with blue diamonds like the Hope Diamond, this Ceylon blue spinel offers a different array of virtues. It will not match sapphire for refractive brilliance at the highest saturation levels, and it will not approach diamond for fire, but it offers a distinctive, crystalline blue that is cleaner at modest color saturation, and it often presents with fewer inclusions than comparably sized sapphires from many locales. The unheated origin from Ceylon further enhances its historical cachet, because Sri Lanka has supplied some of the finest gem quality spinels and sapphires to the market for generations, and collectors value the natural state of these gems when provenance can be traced.

For the educated buyer this gem represents both aesthetic and practical value. The very slightly included clarity indicates minimal internal features that do not detract from beauty or durability, and the radiant cut provides both a contemporary look and efficient light performance. The light color intensity translates into versatility, allowing the stone to pair elegantly with white metals such as platinum or white gold to emphasize a cool, modern palette, or with yellow gold to create a refined contrast that warms the blue. Because the stone is untreated, it retains rarity premium, and provenance from Ceylon supports its market story. The Natural Gemstone Company stands behind the quality and origin of this spinel, and customers who require independent verification will find that formal gemological reports can be arranged. For those seeking a distinctive alternative to sapphire or a historically resonant collector piece that echoes the illustrious spinels of crown jewels, this 1.50 carat radiant blue spinel from Sri Lanka combines craftsmanship, natural color, practical durability, and provenance in a way that rewards both the eye and the intellect.