2.00 Ct. Moonstone from Ceylon (Sri Lanka)

This transparent rainbow moonstone weighs 2.00 carat, a weight that immediately positions it within the premium tier for faceted specimens. The stone measures 8.20 by 7.12 by 4.99 mm, and carries an emerald cut that emphasizes step facet geometry and a broad rectangular table. Origin is Ceylon, Sri Lanka, and the gem is presented with no enhancement. Clarity is graded very slightly included at eye level, a characteristic that confirms the material is fundamentally clean to the viewer while retaining minor natural features that attest to its provenance. Color intensity is described as light, which allows the characteristic adularescent schiller, including rainbow flashes, to read across the spectrum without being overpowered by body tone. Polish is excellent, with facet junctions rendered crisply and surfaces finished to a mirror quality, enhancing light return and the overall visual purity of the stone. The Natural Gemstone Company offers this piece as a collector grade example of a wearable yet technically pure rainbow moonstone.

From a gemological and lapidary perspective, the emerald cut is a considered choice for this material, because the long step facets and restrained crown slope control the way adularescence manifests. The cut yields an average depth of 4.99 mm relative to a mean face dimension of 7.66 mm, producing a depth ratio of approximately 65.1 percent, a proportion that balances face up brightness with internal flash. The table is relatively expansive for an emerald cut of this scale, which stabilizes the broad adularescent sheen, while the stepped pavilion planes channel light back in layered flashes rather than diffuse scintillation. Because rainbow moonstone derives its optical effect from submicroscopic lamellar intergrowths in the feldspar structure, the precise orientation of the pavilion and crown facets influences whether blue dominant flashes or polychromatic sheen are displayed. In this example, the lapidary prioritized an axis alignment that yields consistent adularescence across the table, allowing the light, transparent body color to act as an unobtrusive canvas for spectral play.

Practical considerations for setting and care are important for maintaining the premium attributes of this 2.00 carat stone. The material registers approximately six to six and a half on the Mohs scale, therefore secure bezel or halo settings that protect the girdle and corners of the emerald cut are recommended for daily wear in rings. For pendant and earring applications, protective mounts that reduce exposure to knocks preserve the excellent polish and minimize risk to the slightly included clarity. Cleaning should be performed with warm soapy water and a soft brush, avoiding ultrasonic and steam methods because of the feldspar cleavage and the potential for thermal shock. The absence of enhancements means that color and optical effects are wholly natural, and the Ceylon origin provides a known geological context that experienced buyers value. For the connoisseur who prioritizes technical quality, transparency, and precise cutting over mass produced appearance, this 2.00 carat emerald cut rainbow moonstone from The Natural Gemstone Company represents a rare convergence of weight, clarity, and lapidary intent, and our gem specialists are available to provide additional measurements, facet maps, and mounting recommendations.