0.56 Ct. Blue Spinel from Ceylon (Sri Lanka)

This transparent Ceylon blue spinel offered by The Natural Gemstone Company is a precise specimen for collectors and designers, weighing 0.56 carat and measuring 5.08 x 5.07 x 3.27 mm. The mixed brilliant cut combines a well proportioned brilliant crown with a carefully faceted pavilion, producing a balance of scintillation and controlled color saturation. The table and crown facets deliver lively sparkle, while the pavilion geometry contributes to strong light return and a deep face up appearance. The stone exhibits an intense blue color intensity, consistent with fine Sri Lankan spinels, and displays a clarity grade of very very slightly included evaluated at eye level, ensuring minimal obstruction to brilliance. Polish is excellent, with facet junctions finished to a high standard, and there has been no enhancement applied, preserving the natural character and stability of the material. For gemological reference the refractive index of spinel is approximately 1.718 and specific gravity is approximately 3.60, properties that contribute to its distinct lustre and heft relative to other gem materials.

This round shape and its specific measurements make the stone exceptionally adaptable for custom jewelry, particularly for single stone settings and accent roles. The diameter is ideal for a delicate solitaire ring or a refined stud earring, while the depth of 3.27 mm results in a depth of approximately 64.4 percent, a proportion that slightly intensifies the hue when viewed face up and should be considered when selecting a mounting style. For maximum brilliance choose an open prong setting with four or six fine prongs that secure the girdle and allow light to enter the crown freely. For a contemporary aesthetic a low bezel can protect the girdle while retaining substantial face up color, noting that a full bezel will reduce some direct light return. The gem is also well suited to halo and cluster designs where its intense color provides a focal contrast against melee stones. As an untreated spinel from Ceylon with excellent polish and near flawless eye clarity, this piece represents a reliable, high quality choice for bespoke commissions and precision crafted jewelry, and The Natural Gemstone Company is available to advise on optimal setting specifications and mounting tolerances for this specific stone.