1.91 Ct. Spinel from Ceylon (Sri Lanka)

This transparent 1.91 carat trillion shape reddish pink spinel from Ceylon Sri Lanka presents a technical harmony of material properties and precision cutting, certified and offered by The Natural Gemstone Company. The gem measures 8.21 x 8.36 x 4.40 mm, with proportions yielding approximately 53 percent depth, a vivid color intensity, and a clarity grade of very very slightly included evaluated at eye level. As a spinel the stone is isotropic, with a refractive index in the range typical for spinel, negligible birefringence, and modest dispersion. These intrinsic optical parameters set the stage for the trillion cut to maximize light return, by using a triangular brilliant facet architecture that balances table size, crown angle, and pavilion geometry to convert incident light into controlled brilliance and scintillation while preserving the saturated reddish pink hue.

The trillion cut on this piece employs a threefold symmetry with a central star and radiating pavilion facets that produce strong internal reflections and a lively contrast pattern across the crown. The cut has been executed to emphasize face up color, by slightly deeper pavilion facets that recycle light back through the crown, enhancing apparent saturation without creating a dark window. The excellent polish and precise facet junctions reduce surface scatter, improving luster and allowing crisp facet reflections under both diffuse and direct illumination. The very very slightly included clarity grade indicates minor crystal features, these inclusions are positioned away from critical light paths and are not visible at normal viewing distances, thereby preserving clean contrast and sharp faceting. No enhancement has been applied, so the vivid reddish pink is wholly natural and stable.

From a setting perspective the measured dimensions and triangular outline make this spinel suitable for secure prong or bezel arrangements that expose the crown to light while protecting the truncated points. The combined effect of quality proportions, excellent polish, and the trillion facet plan creates dynamic scintillation and balanced light leakage, producing a gem that reads vivid and lively in hand, and nuanced under varied light angles. This Ceylon spinel exemplifies the meticulous workmanship and gem selection standards of The Natural Gemstone Company, a piece for buyers who value precise cutting technique and unenhanced, certified natural color.