2.94 Ct. Blue Zircon from Cambodia

This listing describes a superb transparent Other certified Blue zircon, weighing 2.94 carats, presented in an elegant oval outline, with dimensions 8.27 x 6.49 x 5.10 mm, cut in a faceted mixed brilliant style, clarity graded slightly included when evaluated at eye level, color strength assessed as medium intensity, polish graded excellent, enhancement by controlled heat treatment, and country of origin Cambodia. The combination of weight and dimensions places this specimen in a size class that is distinctly uncommon for blue zircons in the market, and the oval outline allows a favorable spread of color across the table while preserving depth in the pavilion. The Natural Gemstone Company presents this piece with full attention to technical descriptors to assist connoisseurs and gem specialists in assessing lapidary quality and potential use in fine jewelry or private collections.

The mixed brilliant faceting applied to this zircon synthesizes a brilliant crown geometry with a more controlled pavilion architecture, producing an interplay of scintillation and depth that is optimized for a stone of this density and refractive characteristics. The crown exhibits a precise alignment of star and kite facets that channel incident light into a concentrated return, while the pavilion incorporates modified step facets to stabilize the color plane and prevent washout that can afflict fully brilliant cuts on dense gemstones. Facet junctions are executed with crispness to preserve sharp reflection contrast, and the excellent polish delivers low surface scattering, permitting high contrast between brilliant white flashes and colored fire. For an oval of these proportions, this cutting strategy is technically superior to uniform brilliant variants, because it balances table size and pavilion angles to accommodate the higher refractive index and strong dispersion of zircon.

Optically this blue zircon benefits from the intrinsic properties of the species, namely a relatively high refractive response and pronounced dispersion, which together yield an adamantine luster and vivid fire when the cut is optimized. The present example displays a medium intensity blue that reads as stable across viewing angles, with slight inclusions that do not substantially interrupt light return but do define its clarity grade under unaided eye inspection. Heat treatment has been applied to refine and stabilize the blue hue, a standard practice with blue zircons that produces reproducible chroma enhancement while preserving transparency. The stone also manifests noticeable birefringence typical of zircon, which contributes to facet doubling under magnification and can be used as a diagnostic attribute in identification and evaluation. From a gemological and practical perspective the combination of medium chroma, high brilliance, and controlled facet architecture yields a stone that reads larger than its carat weight might suggest and that presents strong visual impact in faceted jewelry.

Rarity in the current offering is twofold, relating to both size and color quality compared to commonly available blue zircons. Blue zircons above two and a half carats with clean transparency and a well balanced medium blue are uncommon, and specimens that pair that size with a mixed brilliant execution and excellent polish are notably scarce. Many comparable stones trade as either smaller, lighter toned, or with heavier inclusion patterns that limit optical performance, whereas this example maintains transparency and even color distribution across its 8.27 x 6.49 x 5.10 mm dimensions. For collectors and lapidary informed buyers seeking a piece that combines technical cutting integrity, notable optical performance, and provenance from Cambodia, this stone represents a rare convergence of attributes. The Natural Gemstone Company can provide examination imagery, certified documentation specifics, and consultation on setting options that respect the material properties of zircon, including protection from thermal shock and appropriate mounting techniques to minimize the risk of cleavage related damage, delivering a responsibly sourced and technically superior gemstone for discerning clients.