1.37 Ct. Zircon from Ceylon (Sri Lanka)

This transparent 1.37 carat oval pinkish brown zircon is presented with precise proportions and considered craftsmanship, making it a strong candidate for collectors and jewelry designers who demand technical excellence. The stone measures 6.26 x 5.44 x 4.45 millimeters, dimensions that translate to a compact yet substantial presence on the finger, wrist, or pendant. Cut as a mixed brilliant, the gem combines a brilliant style crown with a carefully engineered pavilion that balances light return with controlled fire. Faceting follows classical mixed brilliant geometry, with well defined crown facets and kite shaped facets meeting at crisp junctions, while the pavilion faceting has been arranged to avoid excessive windowing and to concentrate scintillation centrally. The table facet is proportioned to emphasize sparkle without sacrificing perceived size, and the girdle has been finished to a uniform thickness that facilitates secure settings. Clarity is graded eye clean at eye level, an important technical attribute that ensures the internal passage of light is unobstructed, allowing the mixed brilliant architecture to perform at optimal efficiency. The color registers as medium light intensity in a pinkish brown hue, a tone that interacts with zircon s high refractive index to produce a lively play of warm flashes and white brilliance, and the polish is graded excellent, confirming that facet surfaces are smooth and that facet junctions are sharp, which together maximize optical performance and tactile quality. This gem originates from Ceylon Sri Lanka and is offered by The Natural Gemstone Company as an untreated example, with no enhancement, preserving the natural crystallographic character of the material.

On the optical side the combination of cut quality, clarity, and natural material properties results in pronounced brilliance and a noticeable degree of fire, features that are often sought by technically minded buyers. Zircon exhibits a relatively high refractive index for a noncorundum gem, which, combined with disciplined facetation in a mixed brilliant schema, produces strong internal reflection and lively dispersion. The stone s medium light color intensity is advantageous from a design perspective, because it allows the natural hue to be present without masking the spectral flashes generated by fine faceting. Eye clean clarity is critical because it minimizes light obstruction and prevents the absorption and diffusion that can deaden scintillation. The excellent polish and precise facet angles ensure that light is reflected cleanly from facet to facet, translating the geological qualities of Ceylon zircon into visible performance at the gemological level. Craftsmanship techniques applied include careful orientation of the pavilion to align the optic axes, controlled table size to modulate face up appearance, and a balanced crown height to maintain both fire and brightness. These are not aesthetic concessions, they are technical optimizations that enhance the stone s performance under varied lighting conditions, from direct daylight to indoor incandescent environments.

Durability is often the first practical consideration when integrating a fine zircon into a daily wear piece, and this specimen combines material resilience with considered cutting decisions to make it well suited for regular use. Zircon typically occupies the mid range of the Mohs hardness scale, which means it is harder than many common gem materials but softer than corundum and diamond. Its specific gravity is relatively high, imparting a satisfying weight to the carat that conveys quality, while the crystalline structure can include natural cleavage planes that require respect in setting and handling. In this example the generous depth and balanced pavilion geometry reduce the exposure of cleavage planes to lateral impact, and the eye clean clarity means there are no internal stress concentrators that could compromise toughness. The excellent polish also contributes to surface durability because it reduces microabrasion, preserving the facet integrity through daily contact with clothing and hand surfaces. For absolute assurance of longevity in everyday jewelry applications, we recommend mounting choices that provide mechanical protection without impeding light entry, examples being a low flush bezel for an engagement style ring, or secure four to six prong settings with robust gallery support for rings and pendants. Avoiding sudden thermal shocks and hard knocks will maintain color stability and structural integrity, and routine inspections by a professional jeweler will ensure the mounting holds and the stone remains seated and protected.

Presented by The Natural Gemstone Company this untreated Ceylon zircon of 1.37 carats marries scientific gemological virtues with refined lapidary execution. Its mixed brilliant cut, precise dimensions, eye clean clarity, medium light pinkish brown color intensity, and excellent polish create a gemstone that performs optically while a considered approach to setting and care renders it highly suitable for daily wear. For buyers who prioritize technical details and long term practicality, this piece represents a reliable balance of beauty, optical performance, and wearable durability.