2.30 Ct. Greyish Blue Spinel from Ceylon (Sri Lanka)

This 2.30 carat round greyish blue spinel presents an exceptional combination of weight, proportion, and optical purity, supplied by The Natural Gemstone Company. The stone measures 8.73 x 8.67 x 4.29 mm, yielding a balanced round outline with near perfect symmetry as indicated by the minimal difference between the two diameter axes. The face up color is best described as a greyish blue with intense color intensity, a saturation that reads as vivid in controlled lighting yet retains a subtle grey modifier that lends the stone sophistication and versatility in a variety of mounting styles. Clarity is graded as very very slightly included when evaluated at eye level, offering eye clean appearance with only microscopic inclusions detectable under magnification. The cutting style is faceted, executed as a mixed brilliant cut, and the polish is excellent. There has been no enhancement applied, and the origin is Ceylon Sri Lanka, a locality renowned for yielding clean, well colored spinels with excellent crystallographic quality.

From a cutting and light performance perspective the mixed brilliant design of this round spinel has been selected to maximize both color presentation and scintillating return. The cutter has combined a brilliant type crown with a modified pavilion facet arrangement to produce strong table and crown flashes while the pavilion geometry emphasizes broad, lively flashes that animate the surface with movement. The proportions result in a shallow to medium depth, approximately 49.3 percent when calculated from the measured depth and average diameter, a deliberate choice to increase face up spread and apparent size. This depth and the precise facet junctions produce a broad, even table and a well balanced crown pavilion relationship, which together yield pronounced brilliance and controlled light leakage. Spinel is singly refractive and isotropic, and its refractive index range is approximately 1.712 to 1.718 with zero birefringence, properties that contribute to a clean and straightforward light return compared with anisotropic gems. Specific gravity typically falls around 3.60 to 3.65, and hardness is approximately 8 on the Mohs scale, making this specimen both durable and responsive to fine faceting.

The overall craftsmanship elevates this spinel to a centerpiece piece suitable for high end jewelry or a specialized collector offering. The intense greyish blue hue combined with excellent polish and precise mixed brilliant faceting produces a gem that reads as both elegant and dynamic in hand, making it particularly effective as a solitaire ring, pendant, or as the focal point of a bespoke high jewelry commission. The lack of enhancements preserves the natural optical character and market desirability associated with untreated Ceylon spinel, and the very very slightly included clarity at eye level assures clean presentation under normal viewing. For connoisseurs who value technical refinement, the near equality of the diameter axes reflects tight symmetry control, and the execution of the mixed brilliant plan indicates an experienced lapidary intent on balancing color saturation, brilliance, and apparent size. The Natural Gemstone Company stands behind the gemological particulars as described, and this 2.30 carat Ceylon spinel is presented as an exceptional opportunity for buyers seeking a rare, naturally saturated, precisely cut spinel that functions as a true centerpiece in any curated collection.