6.32 Ct. Cabochon Lapis from Afghanistan

One exceptional specimen in our current collection is a single opaque blue lapis weighing 6.32 carats, presented in a cushion outline with precise dimensions of 14.11 by 12.07 by 4.56 millimeters. The material is fashioned as a cabochon, featuring a smoothly domed crown and well controlled profile that maximize the perceived color saturation while maintaining optimal surface proportions for everyday wear. Color grade is best described as vivid with deep royal blue hue, high chroma and a strong evenness across the visible surface. The piece is unenhanced, with no dyeing or resin treatment applied, and the provenance is documented as Afghanistan, a source known for producing lapis of classic ultramarine intensity. The Natural Gemstone Company presents this lapis with full disclosure of its natural state, precise measurements, and a clear statement of non enhancement to support collectors and designers who require untreated material for high end projects.

From a gemological standpoint the stone exhibits properties typical of high quality lapis, dominated by a rich blue matrix consistent with abundant lazurite content and a low proportion of secondary constituents. The opacity and deep tone prevent light transmission and instead favor reflection and surface luster, which is accentuated by the cabochon geometry. Visual examination under magnification reveals a generally homogeneous color field with localized zones of slightly lighter tone and minimal internal irregularities, which are intrinsic to natural lapis. Unlike many commercial examples this specimen shows no prominent metallic pyrite specks disrupting the color field, and no conspicuous calcite veining that would reduce aesthetic uniformity. These factors contribute to its elevated visual grade. Critical evaluation for treatments was performed using standard non destructive methods, including careful magnification inspection for surface coatings and observation under ultraviolet illumination to detect common dyes and stabilizers. The absence of fluorescence anomalies and the consistent polish response corroborate the unenhanced declaration.

Cutting and finishing choices for this lapis were applied with an emphasis on maximizing color depth while preserving structural integrity. The cabochon cut chosen for this piece optimizes the interplay between surface curvature and the stone s opaque character, creating a smooth reflecting plane that delivers a uniform visual weight across the plane of the stone. The cutter maintained a controlled dome height relative to the 14.11 by 12.07 millimeter outline to avoid excessive thickness that would unduly increase weight while still providing sufficient material for secure setting. The girdle and base were shaped to standard jeweler tolerances to facilitate bezel seating and to minimize stress points during manufacture. Polish was executed to an excellent finish using progressively finer abrasives and final buffing compounds selected for lapis, resulting in a high luster surface that enhances the perception of saturation without introducing artificial sheen. Craftsmen paid attention to edge rounding and symmetry to ensure even light reflection across the cushion perimeter, which is particularly important for cabochons where outline symmetry influences perceived quality as strongly as internal color.

For practical application this untreated 6.32 carat cushion cabochon is well suited to bespoke ring centers, pendants and cufflinks where the depth of color can be showcased in a protective setting. Given lapis hardness on the order of five to five and a half on the Mohs scale, secure bezel settings or low profile prong configurations with protective shoulders are recommended to reduce the risk of impact and abrasion. The shallow profile and measured dimensions make the stone compatible with standard jewelry manufacturing processes, while the stabilized natural surface enables direct setting without additional coatings. Care instructions for the end user include avoidance of ultrasonic cleaning and strong solvents, use of mild soap and lukewarm water for routine cleaning, and storage separate from harder gemstones to prevent surface scratching. For clients seeking certification or detailed origin documentation The Natural Gemstone Company can provide laboratory reporting options and high resolution imagery to assist in design approval and insurance appraisal, and our gem specialists remain available to discuss mounting options, bespoke design integration, and complementary gemstone pairings.