1.80 Ct. Moonstone from Madagascar

This 1.80 carat oval rainbow moonstone from Madagascar presents a rare combination of pleasing proportions and optical refinement, dimensions 8.39 x 6.65 x 5.93 mm, a mixed brilliant cut and an excellent polish. The mixed brilliant faceting pattern is deliberately chosen to balance the soft adularescence that defines quality moonstone with a degree of faceted brilliance more typically associated with transparent gems. Because the material is semi transparent, the faceting scheme allows the internal light to play across the gem and emerge as a controlled shimmer and spectral flashes, rather than being lost to a simple cabochon presentation. The result is a stone that reads beautifully both in direct viewing and under movement, showing a central flash that shifts through soft pink and blue tones against a pale base body color. Importantly for the discerning buyer, this stone is completely natural with no enhancement, and its provenance in Madagascar positions it within a known and respected supply source for fine rainbow moonstones, which contributes to both its aesthetic desirability and its investment profile.

From a grading perspective this rainbow moonstone is notably well balanced, clarity grade very slightly included, evaluated at eye level, and medium light in color intensity. Very slightly included in moonstones typically refers to small internal growth features or fine inclusions that do not interfere significantly with the optical phenomena and are not visible in normal wear, and that is the case here. These minor inclusions can actually serve to scatter light in a way that enhances the adularescence, creating depth without compromising the apparent purity of the gem in jewelry. The medium light color intensity is an ideal range for rainbow moonstone when paired with a faceted cut because it preserves the translucent base that supports pleasing flashes while still allowing light to reflect internally and return to the eye. The excellent polish is a critical factor in the perceived quality, because any polish faults would break up the continuity of the adularescence and reduce the gem s ability to present a crisp, lively flash. In this specimen the polish is clean and precise, so the mixed brilliant faceting reads as crisp facet junctions and strong light return, producing an appearance that to the observer often feels visually flawless from many angles, despite the technical clarity grade.

For an educated buyer assessing value, the combination of attributes here makes this rainbow moonstone an attractive and rational choice. The natural, unenhanced status is central, because treatments or enhancements alter market comparators and require additional disclosure and price adjustment. Madagascar as the country of origin carries weight, because well documented deposits produce material that is sought after for its characteristic adularescent quality and stable supply lines to reputable dealers. The gem s 1.80 carat weight and its oval outline make it versatile for both classic and contemporary settings, and the mixed brilliant cut ensures that the gem will perform well in light environments while still retaining the gentle lunar character that collectors prize. Practical considerations are also straightforward, moonstone measures approximately 6 on the Mohs hardness scale with some specimens approaching 6.5, so while it is suitable for rings it benefits from protective settings such as bezels or low prongs to reduce the risk of knocks and abrasion, and routine care should avoid ultrasonic cleaning or harsh chemicals.

At The Natural Gemstone Company we document the measurable attributes you see here because transparency about cut, clarity, origin, and lack of enhancement is fundamental to building lasting trust with clients who value both beauty and provenance. This Madagascar rainbow moonstone, with its precise mixed brilliant cutting, excellent polish, semi transparent body, and very slightly included clarity at eye level, offers the educated buyer a gemstone that reads as refined and visually seamless in wearable designs. The way light interacts with the facets and internal structure creates a three dimensional play of color and brightness, enhancing its beauty from every angle and making it an exceptional choice for a bespoke engagement piece, a signature cocktail ring, or a collection focused on natural phenomena in gemstones. If you would like additional metrics, such as facet counts, facet orientation photographs, or recommendations for mounting to optimize its adularescence and protect long term value, our team at The Natural Gemstone Company will be pleased to assist.