0.61 Ct. Rainbow Moonstone from Ceylon (Sri Lanka)

This transparent 0.61 carat rainbow moonstone, cut to an emerald shape, measures 6.23 x 4.84 x 3.06 mm. The step cut emerald cut features broad parallel facets on the crown and pavilion that produce controlled adularescence and a clean architectural light return. Clarity is graded as very slightly included at eye level, and polish is excellent, allowing unobstructed transmission of light through the table and step facets. Color intensity is light, yet the gem exhibits a concentrated spectrum in motion, a characteristic rainbow sheen that becomes saturated when the stone is tilted under direct or diffuse lighting. No enhancement has been applied, and the material is sourced from Ceylon Sri Lanka, a provenance known for fine moonstone material with stable crystal structure.

In practical settings this stone s vibrant color will stand out in any jewelry setting, the step cut creates mirror like planes that present flashes of blue, violet, and rainbow spectral highlights across the table and along the shoulders. When set in a low bezel the pavilion reflections are preserved and the adularescent veil reads larger, when set in a minimal four prong setting the maximum amount of light penetrates the crown facets, increasing dynamic color play. The clean geometry of the emerald cut pairs well with architectural settings, and the light intensity and transparency allow designers to contrast the moonstone against warm gold for a soft halo, or against cool platinum or white gold for a crisp modern appearance. At The Natural Gemstone Company we recommend considering a halo of micro pave diamonds to lift perceived color saturation, or a knife edge band to emphasize the stone s table. For collectors who value lapidary precision, this example demonstrates careful facet alignment, symmetrical girdle, and faceting proportions that preserve the natural adularescence while maintaining a wearable profile for everyday jewelry.