0.99 Ct. Yellowish Brown Cabochon Cat’s Eye Chrysoberyl from Ceylon (Sri Lanka)

This 0.99 carat oval yellowish brown chrysoberyl from Ceylon, Sri Lanka is presented as a classic cabochon, with finished dimensions of 6.79 x 4.59 x 3.26 mm, an eye clean clarity evaluation at standard viewing distance, intense body color, and an excellent polish. The cutter has preserved a smooth, symmetrical oval outline and a well proportioned dome to maximize the optical response unique to chrysoberyl cat's eye varieties. No treatment or enhancement has been applied to this specimen, allowing the natural colour components and internal fibrous structure to remain unaltered. The gem sits within the small size class suited for refined jewellery applications, yet its strong colour saturation and high quality surface finish provide presence beyond its weight class, making it a reliable choice for a focal element in a bespoke design from The Natural Gemstone Company.

The defining characteristic of this cabochon is its sharp single chatoyant band. The cat s eye effect is produced by a dense, parallel array of fine, needle like inclusions oriented along crystallographic growth planes, which act as an optical diffraction plane under directional lighting to form a concentrated band of light. In this stone the band is narrowly defined and centrally located, exhibiting bright, silvery white reflectance that contrasts cleanly against the warm honey to cognac body tone. The curvature of the dome has been graded to balance band sharpness and mobility, so that with subtle motion the band translates smoothly across the surface without splitting or fading. The excellent polish minimizes surface diffusion and highlights the linearity of the band, while the eye clean nature of the body ensures that the inclusions responsible for chatoyancy contribute to visual effect rather than obstruction.

For a custom mounting the practical considerations are straightforward and technical. To maximize chatoyancy the gem should be oriented in the mounting so the band is aligned to the intended axis of motion or the primary viewing plane, typically with the band parallel to the long axis of a pendant bail or parallel to the finger for a ring to create a dynamic sweep with hand movement. A low bezel with an open back or a thin stepped gallery will protect the cabochon and allow light access from below, which enhances the intensity and apparent width of the band. Metal choice will influence perceived warmth and contrast, 18 carat yellow gold or warm 14 carat rose gold will harmonise with the yellowish brown body colour producing a tone on tone effect, while platinum or white gold will increase contrast and make the silvery chatoyant band appear brighter. Complementary gemstones should be selected for optical dialogue. For tone on tone harmony consider warm accent stones such as golden citrine, champagne diamonds, or yellow sapphires, set as micro pavé or as calibrated side stones. For chromatic contrast choose deep green stones such as demantoid garnet or chrome diopside to exploit complementary colour interaction, or use vivid green tsavorite or emerald for a classic, high contrast palette. Faceted brilliant cut diamonds around the perimeter or as shoulder stones will add scintillation that contrasts effectively with the singular, linear movement of the cat s eye. For a refined contemporary look use tapered baguette or trillion cut accent stones to echo the oval axis and frame the cabochon without competing with the band.

From a design perspective this 0.99 carat Ceylon chrysoberyl cabochon is technically versatile. Its size and strong chatoyancy are ideal for a vertical pendant where the band tracks with wearer movement, or for an elegant solitaire ring with a fine halo of small brilliant diamonds to enhance perceived size and focus attention on the band. For a statement piece consider pairing it with two calibrated triangular yellow sapphires or a pair of deep green demantoids as flanking stones, mounted in a low profile bezel with a guarded setting to preserve the dome. When you commission a custom piece with The Natural Gemstone Company we can provide CAD mock ups, recommended setting specifications including bezel wall height and gallery clearance, and precise advice on accent gem calibrations so that the final jewel optimises orientation, light access, and protective security while showcasing the unique chatoyant band of this fine Sri Lankan chrysoberyl.