1.51 Ct. Moonstone from Madagascar

This oval shaped rainbow moonstone weighs 1.51 carats, with exact dimensions of 7.48 x 6.89 x 5.59 mm, presenting a semi transparent body and a mixed brilliant cut, optimized to balance optical performance with weight retention. The mixed brilliant design provides a faceted crown executed with small to medium sized triangular and kite facets converging to a well proportioned table, while the pavilion exhibits modified brilliant pavilion facets designed to return light and enhance the internal adularescence. Clarity is graded very slightly included at eye level, indicating minor internal growth features that do not interfere with the stone's primary optical phenomena. Color intensity is medium light, producing a clean, cool body tone that allows the blue to white schiller and spectral flashes characteristic of high quality rainbow moonstone to manifest. Polish is excellent, with crisp facet junctions and smooth planes that maximize luster, and there are no enhancements, preserving the natural state of the feldspar. The gem displays consistent symmetry and proportional crown to pavilion relationships, which supports even light return and a pleasing face up appearance suitable for precision settings.

The provenance of this moonstone, sourced from Madagascar, materially contributes to its desirability and value, The Natural Gemstone Company offers this piece with full transparency on origin. Madagascar is recognized for producing feldspar specimens with unusually clear body color and strong adularescence, due to the well formed lamellar intergrowths of albite and orthoclase developed under stable metamorphic conditions. This geological history yields stones in which light scatters in a concentrated band, producing the vivid internal glow that connoisseurs seek. In addition to geological rarity, Madagascar material often arrives with minimal post mining treatment, which combined with the no enhancement status of this gem increases its market premium among collectors and fine jewelers. For studio jewelers and designers who value technical precision, this moonstone offers a predictable oriented adularescence axis, stable facet alignment for bezel and prong work, and sufficient depth to allow secure setting without compromising the optical axis. The combination of measured proportions, excellent polish, natural clarity profile, and Madagascar origin makes this 1.51 carat oval an attractive selection for those seeking a technically refined and provenance rich rainbow moonstone.