0.59 Ct. Greenish Blue Zircon from Ceylon (Sri Lanka)

This emerald cut greenish blue zircon from The Natural Gemstone Company weighs 0.59 carat, and measures 5.05 x 3.28 x 2.81 millimeters, faceted with a classic step cut that emphasizes broad crown and pavilion facets, trimmed corners and a generous table. The cutting style is meticulous, the facet junctions are crisp and the polish is graded excellent, which together maximize both light return and windowing control. Clarity is slightly included, evaluated at eye level, the inclusions are minor and positioned so that the step faceting minimizes their visibility while preserving weight and face up color. Color intensity is medium, presenting a greenish blue balance characteristic of fine Sri Lankan zircons, and the material has been heat treated to stabilize and enhance tone. Origin is Ceylon, and the selection reflects the island provenance with balanced hue and lively optical properties.

Under varying lighting conditions this stone displays distinct and desirable behavior, the high refractive index and notable dispersion of zircon produce strong fire under small point light sources, while the step cut translates that dispersion into broad colorful flashes rather than tight scintillation. In cool daylight the greenish blue tenor reads as fresh and slightly greener, with even color distribution across the table and lively internal reflections. Under neutral white LED lighting the blue component is pronounced, and the stone appears more saturated, the clean facet planes creating bold flashes that emphasize clarity and polish. Under warm incandescent or halogen light the tone shifts subtly toward a deeper teal leaning blue, and the dispersion yields warmer spectral flashes that enhance perceived depth. With directional spot illumination the pavilion steps act like light wells, producing layered flashes and strong window contrasts, whereas in soft diffused lighting the gem presents an elegant, saturated table color with subdued but pleasing internal play. For mounting we recommend an open setting to preserve light entry and to showcase the step facet architecture, the result being a gem that reads as technically well executed and visually versatile, representative of The Natural Gemstone Company commitment to precision and gemological integrity.