0.52 Ct. Moonstone from Ceylon (Sri Lanka)

This 0.52 carat emerald cut rainbow moonstone measures 6.00 x 3.88 x 3.25 mm, and displays a transparent body with light color intensity, very slightly included clarity when evaluated at eye level, and an excellent polish, originating from Ceylon Sri Lanka. The gem has been left untreated, with no enhancement, preserving its natural optical character and inherent structural integrity. The emerald cut shape has been executed with precise geometry, and the clean, linear facet arrangement defines the stone with exacting proportions and balanced planes, supporting predictable light behavior and ease of setting. The overall presentation emphasizes dimensional accuracy and surface finish, and the combination of size and cut yields a confident presence suitable for a refined setting where clarity of form and predictable optical response are primary considerations, presented by The Natural Gemstone Company.

The geometric faceting of this emerald cut has been designed to allow maximum light play, and the elongated rectangular outline with parallel facets produces a controlled interaction between incident light and the internal structure of the moonstone. Facet alignment and proportion optimize the transmission and reflection pathways, enhancing the characteristic adularescent sheen and allowing delicate spectral flashes to emerge across the table and along the step cut planes. Because the material is transparent and very slightly included at eye level, light is able to traverse internal planes with minimal obstruction, yielding a pronounced but restrained flash that follows viewing angles and illumination conditions. The excellent polish minimizes surface scattering, preserving contrast between the polished facet planes and the subtle internal glow, and the result is a gem that reads clean and precise in hand, while still delivering the unique luminous movement expected of a high quality rainbow moonstone. For design considerations, the measured proportions and rectangular profile facilitate classical bezel or prong settings, and the durable finish supports routine wear with simple care. The gem is documented as originating from Ceylon Sri Lanka, and its untreated status ensures that the described optical properties and material character are natural and unchanged.