2.40 Ct.Tw.Total Carat Weight Cabochon Chrysoberyl Pair from Ceylon (Sri Lanka)

This matched pair from The Natural Gemstone Company comprises two certified greenish yellow chrysoberyl cabochons, each weighing 1.20 carats, with dimensions 5.60 by 4.98 by 4.25 millimeters and 5.69 by 4.83 by 4.30 millimeters respectively. Both stones present an oval outline with carefully calibrated domes that emphasize translucency and directional light response. Clarity is graded very slightly included at eye level, and color is described as medium intensity greenish yellow, which sits within the classic Ceylon chrysoberyl range. The surfaces exhibit excellent polish and the material is natural with no enhancement, a characteristic that reinforces both long term stability and market value. Origin is Ceylon Sri Lanka, and the pair is supplied with gemological certification to document species identity and the absence of treatments.

From a gemological and lapidary perspective these cabochons are executed to maximize chatoyancy and even color distribution. The dome heights are substantial enough to form a continuous reflective band when light is oriented across the stone plane, indicating well controlled curvature and symmetry between the two pieces. Chrysoberyl is a high refractive index, dense material with typical refractive index values in the range 1.746 to 1.755, specific gravity near 3.73, and Mohs hardness approximately 8.5. The narrow, linear luminous band observed is consistent with parallel fibrous or acicular inclusions oriented during crystallization, which act as an effective reflector and generate the cat s eye phenomenon in cabochon form. The very slightly included clarity grade is appropriate for a chatoyant specimen because modest internal texture can enhance the sharpness of the band without compromising overall translucency.

When compared to similar non matching gemstones the technical advantages of this pair become clear. Versus faceted chrysoberyl examples the cabochon form sacrifices fire and faceted brilliance in order to present a directional optical effect, so a non matching faceted chrysoberyl would read different to the eye under the same lighting conditions, exhibiting faceted scintillation rather than a continuous chatoyant line. Compared to peridot which commonly appears in olive to lime green and has lower hardness near 6.5 to 7 and a lower refractive index close to 1.65 to 1.69, these chrysoberyls offer superior wearability and greater resistance to abrasion for everyday jewelry. Compared to yellow sapphire corundum the sapphire will typically show higher brilliance and a higher refractive index near 1.762 to 1.770 and Mohs hardness 9, but sapphires are more frequently heat treated to modify tone and saturation, whereas these chrysoberyls are unenhanced and natural, traits that collectors and technical buyers often prefer. Compared to heliodor beryl the beryl species will display a noticeably lower refractive index and different inclusion patterns, making its light performance and durability distinct from chrysoberyl.

Selecting a matched pair offers measurable technical benefits over assembling jewelry from non matching stones, and those benefits are evident in this offering. The near identical individual weights and closely matched oval dimensions ensure symmetrical light behavior and uniform chatoyant band placement when set side by side, which is critical for stud earrings or matched cabochon mounts. In contrast, non matching pairs with variance in dome height, axis orientation, or color intensity will show divergent band sharpness and perceived hue under identical lighting, detracting from the visual coherence of the set. For settings that require both protection and visibility of the chatoyant band we recommend bezel or partially bezel mounted styles that preserve the dome profile and allow the band to traverse unimpeded, and our team at The Natural Gemstone Company can advise on tolerances and seat dimensions to secure optical alignment for mounting. For buyers who prioritize unenhanced origin identified material with technical integrity these greenish yellow Ceylon chrysoberyl cabochons represent a robust option with measured physical parameters and documented quality.