23.55 Ct. Cabochon Lapis from Afghanistan

This specimen is a 23.55 carat, oval shaped blue lapis, weighing 23.55 carats which is equivalent to 4.71 grams, with precise measurements of 22.65 x 13.18 x 9.81 mm. The stone is opaque, exhibiting vivid color intensity, and it has been fashioned as a cabochon with an even domed profile and an excellent polish. There has been no enhancement to this material, and the origin is Afghanistan, a provenance that is widely recognized for producing lapis of deep blue saturation and superior lapidary yield. The oval outline is clean and well centered, the girdle margins are consistent along the perimeter, and the stone presents a uniform surface finish that allows its saturated blue to read consistently from multiple viewing angles.

From a cutting and proportions perspective this lapis displays thoughtfully executed geometry to maximize visual impact. The length to width ratio is 1.72 which produces an elongated oval that reads larger in suspension and is proportionally elegant when set. The dome height relative to width is 0.745 which indicates a substantial convex profile, and the height relative to length is 0.433 which balances presence with wearable scale. Such doming is intentional for opaque stones it enhances apparent color depth and provides a broad plane of specular reflection. The lapidary process for this piece would have included sequential preforming on diamond abrasives to establish the outline, graded grinding to develop the crown curvature, followed by progressive prepolishes and a final polish using a fine oxide on leather to achieve the mirror like surface. The apex is well centered, avoiding asymmetrical light pooling and minimizing edge stress when set.

Materially this lapis benefits from the mineralogy typical of high quality Afghan material. The vivid blue derives from the chromophore within the primary mineral phase, providing a dense, even coloration that is the primary determinant of value for opaque blue lapis. Because the piece is untreated, collectors and designers can be certain that the color and structural integrity are native to the stone. The cabochon format is the traditional and most appropriate cut for lapis, as it prioritizes mass of color over optical refraction, and the substantial dome enhances both perceived saturation and surface luster. In practical use the 22.65 mm length and pronounced dome make this stone particularly effective as a central element in a pendant or brooch, or as a dramatic focal in a signet style ring when mounted in a protective bezel setting that supports the substantial profile.

For connoisseurs and designers who value both technical execution and natural provenance this lapis functions as a centerpiece in any collection. Its precise dimensions, weight, and ratios make it straightforward to place in bespoke settings, and its no enhancement status and Afghanistan origin contribute to long term desirability. Care recommendations for preserved polish and color stability include avoiding mechanical impact and chemical exposure, cleaning with a soft cloth and warm water, and preferring protective bezel mounting rather than exposed prong settings to reduce edge chipping risk. At The Natural Gemstone Company we document provenance and treatment status for each item, and this 23.55 carat oval cabochon exemplifies high quality lapidary work combined with a natural vivid color that will anchor both design projects and cabinet collections.