6.61 Ct. Cabochon Moonstone from Ceylon (Sri Lanka)

One exquisite specimen offered by The Natural Gemstone Company is a translucent orange moonstone weighing 6.61 carats, presenting an elegant oval outline. The gem measures 14.03 by 10.08 by 6.43 millimeters, which translates to a substantial face up area and a pronounced dome that optimizes light interaction. The piece is fashioned as a cabochon cut, with no facets, and displays a very very slightly included clarity grade when evaluated at eye level. Color is graded as medium intense, offering a warm, evenly distributed orange saturation across the table. The finish is described as excellent polish, and there are no enhancements to report, the origin being Ceylon Sri Lanka, a classic source for high quality feldspar material.

From a lapidary perspective the cabochon form and the specific dome height were chosen to maximize adularescence and overall visual depth. Moonstone derives its characteristic sheen from tightly stacked feldspar lamellae which scatter light, and careful orientation of the rough relative to those planes is critical when cutting. In this example the cutter oriented the piece to produce a continuous, balanced optical effect across the length of the oval, avoiding interruptions from cleavage planes and minimizing the impact of internal inclusions. The degree of curvature on the crown was calibrated to provide a pleasing interplay between body color and flash, while the pavilion was proportioned to retain weight without creating optical dead zones. The absence of facets is intentional, as faceting would diminish the soft, floating glow that defines quality moonstone.

Optically and materially this moonstone presents several important technical attributes of note. The adularescent effect is produced by the microstructure of intergrown orthoclase and albite layers, and in orange moonstone the warm body tone combines with subtle internal scattering to yield a rich, silky appearance rather than a concentrated pinpoint flash. The translucency facilitates partial light transmission, enhancing inner glow while preserving color saturation. Clarity described as very very slightly included evaluated at eye level indicates that inclusions are sparse and fine, most likely thin cleavage related filaments or minute mineral inclusions, neither of which materially affect light performance. Typical gemological parameters for feldspar moonstone place refractive indices in the range of approximately 1.518 to 1.526, and specific gravity near 2.56 to 2.63, and the physical characteristics of this 6.61 carat stone are consistent with those ranges, yielding a substantial hand feel and secure polish retention thanks to the skilled finishing work.

For the collector or jeweler considering setting and care, several practical recommendations apply. The oval dimensions of 14.03 by 10.08 millimeters are well suited to classic ring settings and pendants, and the dome height of 6.43 millimeters produces a prominent profile that reads well in both custom and ready made mountings. A bezel setting will provide optimal protection for the rounded crown and minimize the risk of edge chipping during wear, while a well engineered low prong or collet design can also be used if care is taken to secure the girdle without compressing the stone. Because this moonstone is untreated and shows no enhancements, it is especially desirable to purist collectors and designers seeking natural material, and The Natural Gemstone Company can provide certification details on request. For routine maintenance avoid ultrasonic cleaners and harsh chemical detergents, clean gently with warm water and mild soap and a soft brush, and store separately from harder gems to prevent abrasion, since feldspar typically registers about 6 to 6.5 on the Mohs hardness scale. With its precise cutting orientation, even color distribution, and excellent polish, this 6.61 carat Ceylon orange moonstone represents a technically refined example of the material ideal for fine jewelry applications and discerning collections.