1.80 Ct. Moonstone from Ceylon (Sri Lanka)

One beautiful transparent 1.80 carat pear shape rainbow moonstone, dimensions 9.20 x 6.98 x 5.07 mm, presents a refined combination of weight and proportion suitable for both classic and contemporary jewelry designs. The stone is fashioned in a mixed brilliant cut, a choice that balances internal return of light with a pleasing outline, and it exhibits a clarity grade of slightly included when evaluated at eye level. Color intensity is described as light, allowing the characteristic adularescent phenomenon of rainbow moonstone to remain the principal visual feature. Surface finish is reported as excellent polish, and no enhancement has been applied to this natural material. Origin is Ceylon, Sri Lanka, a historically significant provenance that reinforces the gem’s pedigree.

Optically this rainbow moonstone is notable for its transparency and for the iridescent play of color that crosses its pear-shaped table and faceted pavilion. The mixed brilliant cut leverages both faceted brilliance and a broad table, which helps reveal subtle spectral flashes across the stone’s surface and within its body. Slight inclusions, visible at eye level under careful inspection, are typical for feldspathic gemstones and do not materially detract from the stone’s visual performance or structural integrity. Excellent polish ensures crisp facet junctions and optimal surface sheen, enhancing perceived brightness and the clarity of the adularescent layers. The absence of treatments confirms the stone’s natural state, an important attribute for collectors and craftspeople who prioritize authenticity.

The heritage of moonstone is extensive and well documented, and this specimen from Ceylon carries that tradition into a modern setting. Historically, moonstones have been valued across cultures for their connection to lunar imagery and cycles. In ancient Rome and Greece, moonstone was associated with lunar deities and worn as an amulet for protection and clarity. In South and Southeast Asia, including Sri Lanka, moonstone has been used in ceremonial jewelry and as a talisman for auspicious occasions, often set in heirloom pieces passed down through generations. The pear shape itself has a long lineage in jewelry, commonly used in pendants and earrings to evoke a tear or drop motif, and it has been favored for its ability to elongate and flatter, while concentrating optical phenomena along its axis. Presented by The Natural Gemstone Company, this moonstone links contemporary gemological standards with those longstanding cultural uses.

Practical considerations for setting and care reflect both the stone’s beauty and its material properties. Rainbow moonstone typically rates about 6 to 6.5 on the Mohs scale, and while sufficiently durable for rings and pendants, it benefits from protective settings such as bezel or partial bezel mounts that shield edges and points from impact. The pear shape can be secured with a reinforced collar at the tip to reduce the risk of chipping. Cleaning is best accomplished with lukewarm water, mild detergent, and a soft cloth or brush; avoid steam and harsh ultrasonic cleaning to preserve internal structure and polish. Given its natural origin and lack of enhancement, this moonstone is appropriate for use in bespoke pieces intended for both occasional wear and careful daily use, where its subtle luminosity can be appreciated without aggressive exposure to wear and tear. The Natural Gemstone Company stands behind the documented specifications and provenance of this gem, and the piece is offered as a natural, untreated example of Ceylon rainbow moonstone suitable for fine jewellery and curated collections.