8.21 Ct.Tw.Total Carat Weight Blue Cabochon Agate Pair from Namibia

This matched pair of pear shape blue agates presents a technically sound offering for designers who prioritize symmetry and surface finish. The two stones weigh 3.69 and 4.52 carats respectively and measure 17.22 x 9.57 x 3.89 mm and 17.20 x 9.58 x 3.01 mm. Both are cabochon cut, exhibiting the traditional domed face and flat or slightly convex pavilion characteristic of fine cab work. The domes are well-centered with sharp pear apices and smoothly tapered shoulders, producing consistent light return across the face of each stone. Although the lengths and widths are effectively identical, the pavilion depths differ, one at 3.89 mm and the other at 3.01 mm, which results in a modest variance in cab height and may influence setting tolerances; a shallow bezel or an adjustable closed-back bezel will accommodate this disparity with minimal visible effect. Clarity is graded Very Slightly Included at eye level, with fine, typical agate banding visible under magnification; these internal features are stable and contribute to the material’s character rather than detract from it. Color intensity is medium, the blue saturation evenly distributed after enhancement, and the polish is excellent, yielding a glassy surface free from lap lines or polish haze.

From a material and treatment perspective, these are dye-treated blue agates of Namibian origin, an important disclosure for both valuation and care considerations. The dye treatment enhances the natural chalcedony banding and uniformity of tone; it is stable under normal wear but may be susceptible to strong solvents, prolonged soaking, and extended ultraviolet exposure, so routine care should avoid harsh chemicals and ultrasonic cleaners. Given the opaque to semi-opaque nature of agate, closed-back settings or bezels will maximize color depth and protect the dye surface. These pieces are well suited to paired earrings or asymmetric pendant designs where the slight depth variance can be integrated as an intentional dimensional contrast. For inventory context and comparative cataloguing, opal type, White Opal. The Natural Gemstone Company fully documents origin and enhancement status for these agates and can provide additional matching stones, custom cutting recommendations, and measured mounting tolerances to ensure optimal integration into finished jewelry.