0.68 Ct. Blue Spinel from Ceylon (Sri Lanka)

This listing presents a beautiful transparent 0.68 carat cushion shape blue spinel, measuring 5.88 x 4.70 x 2.78 mm, finished as a faceted gemstone with a mixed brilliant cut and an excellent polish. The stone displays medium color intensity, a cool and appealing blue that reads vivid yet balanced under natural daylight and jewelry lighting. Clarity is graded as very slightly included when evaluated at eye level, which means that the inclusions are minimal and do not distract from the gem's overall brilliance or transparency. This spinel is entirely natural with no enhancement, and its origin is Ceylon, Sri Lanka, a locality renowned for producing spinels and sapphires with attractive color and clarity. The cushion outline gives a slightly softened square silhouette, while the mixed brilliant facet arrangement brings lively return of light and scintillation that makes the color appear lively from a range of viewing angles.

For an educated buyer concerned with gemological attributes, the mixed brilliant cut is worth noting because it skillfully combines step facets on the pavilion with brilliant style on the crown to maximize both color and sparkle. In a blue spinel of this size and proportion the cutting orientation, table size, and pavilion depth influence the perceived saturation and brightness. The measurements here indicate a well balanced gem, with enough depth to preserve color without trapping light, and the excellent polish enhances facet sharpness and overall light performance. The clarity grade very slightly included suggests that inclusions are likely limited to tiny crystals or faint needle like features that are visible only upon close inspection and typically under magnification. Because this spinel is untreated, its color and clarity are wholly natural, which is an important consideration for collectors and connoisseurs who value provenance and integrity in fine gemstones.

When designing a custom piece around this cushion blue spinel, there are several complementary approaches that highlight its strengths. Set in platinum or 18 karat white gold, the cool metallic backdrop will emphasize the blue tone and create a crisp, contemporary aesthetic, ideal for solitaire rings where the spinel is center stage. A delicate halo of small round brilliant diamonds will increase perceived size and intensify sparkle without competing with the blue, while tapered baguettes or tapered trillion side stones can lend architectural balance in a three stone ring. For a warmer, more vintage inspired look, 18 karat yellow gold creates an elegant contrast and adds visual warmth, especially when paired with small rose cut or old European cut diamonds for a soft, antique feel. Colored gemstone accents also work beautifully, for example small pink spinels or subtle padparadscha colored sapphires can create a romantic palette, while a pair of green tsavorite garnets introduces a bright complementary contrast for a striking, modern composition. In a pendant configuration the cushion spinel can be suspended within an open gallery to allow light through the pavilion, or set within a decorative bezel with accent diamonds. For earrings, matched small blue spinels or paired diamond cushions will maintain symmetry and color consistency across the pair.

From a value and care perspective this 0.68 carat Ceylon blue spinel offers collectors and buyers a rare combination of natural, untreated color, eye level clarity described as very slightly included, and an expertly executed mixed brilliant cut. The lack of enhancement increases its desirability for those who prioritize natural material and traceable origin, and Ceylon provenance carries a long established reputation for quality. For day to day care we recommend gentle cleaning with warm soapy water and a soft brush, and to avoid harsh chemicals or prolonged exposure to extreme heat, and to consult a gemologist before using ultrasonic cleaners, particularly when settings have tight bezels or extensive side stones. The Natural Gemstone Company stands behind the gemstone with full disclosure of its characteristics and can assist with independent certification if required, and we welcome inquiries about bespoke settings and design consultations to showcase this cushion blue spinel to best effect. For collectors who seek a marriage of natural provenance, cut quality, and enduring beauty, this Ceylon blue spinel represents a refined and trustworthy choice.