0.67 Ct. Moonstone from Ceylon (Sri Lanka)

This transparent 0.67 carat rainbow moonstone measures 5.94 x 4.46 x 3.81 mm, presented in an elegant emerald cut that accentuates linear symmetry and directional light return. The emerald cut is an uncommon and refined choice for moonstone, allowing the stone to display a controlled and sophisticated adularescence while maximizing surface brilliance and polish. Clarity has been evaluated at eye level as slightly included, which means small internal features are present but do not detract from the overall clarity and visual appeal when set or viewed in typical lighting, and these natural inclusions can actually contribute to the distinctive character that collectors appreciate. Color intensity is faint, which is typical for quality rainbow moonstone, and this subtlety allows the internal schiller and spectral flash to read clearly against the transparent body. The gem has received an excellent polish, ensuring crisp facet junctions and a mirror like finish that enhances light performance and tactile feel. There has been no enhancement to this stone, and the absence of treatments is an important factor for discerning buyers who prioritize natural, untreated gemstones.

Origin is Ceylon Sri Lanka, a classic and respected source for exceptional moonstones and other feldspar gems, and provenance from this region adds provenance value for informed collectors and connoisseurs. For the educated buyer, the combination of transparent body, careful emerald cut proportions, clean polish, and natural origin creates a balanced profile of rarity and wearability. The slight inclusions noted at eye level are consistent with natural formation and do not compromise durability, while the faint color intensity complements modern design aesthetics that favor subtlety and optical play over saturated hue. Displayed in a bezel or solitaire setting, this stone becomes a striking centerpiece, its step cut facets guiding the moonstone shimmer across the table and crown faces for a refined and measurable brilliance. At The Natural Gemstone Company we document each attribute clearly, and this rainbow moonstone represents a specimen level piece for collectors or an elevated focal gem for bespoke jewelry, combining scientific grading details with artisanal cutting to deliver an object of lasting appeal.