2.09 Ct. Pinkish Purple Spinel from Ceylon (Sri Lanka)

This 2.09 carat cushion shape pinkish purple spinel from Ceylon presents a compact yet deliberately proportioned form, with dimensions of 7.65 by 7.00 by 4.96 millimeters. The cutter adopted a mixed brilliant faceting scheme, combining a brilliant style crown with a pavilion that integrates both brilliant and modified step facets, to exploit the material optical properties of spinel. Spinel is isotropic with a refractive index of approximately 1.718, and that refractive index produces a critical angle in the mid thirties of degrees which the cutter calibrated the pavilion and crown angles to exceed, thereby promoting total internal reflection and optimal light return. The resulting depth, approximately 67.7 percent, is intentionally balanced to sustain strong internal reflection while avoiding excessive windowing or extinction. The cushion outline with rounded corners reduces corner light leakage commonly seen in rectilinear shapes, directing light flow through a controlled facet geometry that enhances both overall brilliance and localized scintillation.

Color is a crucial component of the optical performance, and this specimen shows an intense pinkish purple saturation with a medium deep tone that preserves both hue purity and vibrancy under daylight and incandescent sources. Spinel color arises from trace element substitution in the magnesia aluminate lattice, and in this stone the color distribution is even, with no noticeable zoning at visible inspection, which maximizes consistent light absorption and selective wavelength transmission. Intense color intensity in spinel works synergistically with the mixed brilliant cutting style to generate color scintillation, where small flashes of saturated tone alternate with brighter flashes as the stone moves. Because spinel is isotropic and lacks pleochroism, the color remains consistent when rotated, so the cutter could prioritize cut proportions that favor light performance rather than compensating for directional color variance.

Clarity and polish are equally decisive in achieving a signature sparkle, and this spinel is graded very very slightly included when evaluated at eye level, indicating inclusions are minute and do not impede the optical pathways created by the faceting. Inclusions are confined, often crystalline or pinpoint in type, and positioned so they lie away from critical facet junctions, minimizing light scattering. The excellent polish denotes that facet planes are smooth and mirror like, with precise facet junctions and sharp edges that preserve specular reflection. Those attributes reduce diffuse light escape and maintain crisp contrast patterning across the pavilion and crown. The mixed brilliant cut produces a cellular contrast pattern that alternates bright and dark facets as a result of internal light redistribution, and the small, well executed facet facets on the crown produce tight, high frequency scintillation while the pavilion architecture controls broader flash scintillation, together yielding a dynamic and multilayered visual performance.

This spinel is untreated, no enhancement, and its origin is Ceylon Sri Lanka, a proven source for premium spinel material that balances desirable color and clarity with natural stability. From a gemological standpoint the material’s specific gravity near 3.60 and Mohs hardness of 8.0 provide durable wear characteristics compatible with most jewelry settings while preserving the integrity of the finely executed facet angles. The cutter’s choice to leave the stone unenhanced preserves natural inclusions and color chemistry, offering collectors and connoisseurs a transparent record of provenance and formation. For customers seeking a gem with technical excellence and exceptional light behavior The Natural Gemstone Company presents this cushion spinel as a specimen where measured proportions, facet design, material optics, and meticulous finishing combine to produce a sparkle that is both lively and controlled, exhibiting sustained brilliance, precise scintillation, and vivid color harmony suitable for high end bespoke mounting.