6.64 Ct. Zircon from Cambodia

This 6.64 carat oval greenish blue zircon from Cambodia presents a controlled balance between color saturation and optical performance, ideal for collectors and custom jewelers. The stone measures 10.45 by 8.21 by 6.90 millimeters, a dimension set that yields a generous face up presence while maintaining manageable pavilion depth for strong light return. Cut as a mixed brilliant, the crown is faceted in a full brilliant schema to maximize scintillation, while the pavilion employs modified facets that act to concentrate color and enhance internal reflection. The table is proportioned to favor both brilliance and color, avoiding excessive wash out in bright light, and the girdle thickness has been moderated to facilitate secure setting without sacrificing weight to excess girdle material. The color intensity is classified as intense, a lively greenish blue that displays dominant blue fluorescence under daylight and warmer green tones under incandescent lighting, indicative of balanced pleochroism that is typical for zircon when viewed through varying angles. The gem exhibits an excellent polish, which is immediately evident in the crisp facet junctions and the lively return of light from the pavilion facets.

Clarity was evaluated as very slightly included at eye level, a grade that indicates minor natural inclusions are present but do not distract from face up appearance or brilliance. These inclusions function as internal character markers that confirm natural origin, while the overall transparency remains high, allowing the stone to deliver sharp facet contrast and defined flashes of light. The gem has undergone heat treatment, a common and stable enhancement applied to zircon to deepen hue and improve clarity, and this treatment is permanent under normal wear and care. Given the refractive and dispersion properties of zircon, this piece shows pronounced fire and lively scintillation, making it appear more dynamic than many other blue green gem materials of similar size. The cutting and polishing demonstrate experienced lapidary technique, with facet angles set to maximize the trade off between color saturation and brilliance, which is especially important for stones with strong color intensity. Provenance from Cambodia is noted, and the geological source contributes to both the color profile and crystal habit that the cutter has exploited in creating this balanced oval.

For custom jewelry applications this oval zircon is exceptionally versatile, and it can be configured into a wide range of settings to suit contemporary or traditional aesthetics. For a solitaire ring, a four prong or six prong crown setting will secure the stone while permitting maximum light ingress to favor brilliance, whereas a low profile bezel setting provides superior protection for everyday wear and emphasizes the vivid hue by framing the stone with metal. A halo design using small brilliant cut diamonds or white zircons will amplify perceived size and add scintillating contrast, especially effective when set with a delicate milgrain or pavé shoulders to create a vintage inspired piece. For pendants and drop earrings, an open gallery or under gallery architecture enhances light transmission and allows the mixed brilliant cut to flash dynamically as the piece moves. The oval shape is also ideal for east west orientation in modern ring designs, and the proportions of 10.45 by 8.21 millimeters fit standard mountings for custom three stone configurations where tapered side stones or trapezoid accents can be specified to follow the color and refractive properties of the center stone.

The Natural Gemstone Company can assist with precise planning and fabrication details to translate technical characteristics into a finished jewel that respects the stone geometry and optical behavior. We recommend mounting options that prioritize open pavilion access and minimal table obstruction when the goal is maximum brilliance, or protective bezel and gallery reinforcement for clients seeking durability and wearability. Our bench offers advice on compatible accent stones, metal choices that will enhance the greenish blue tone, and setting profiles to control light entry and color saturation, and we can produce CAD renderings that demonstrate how prong count, bezel width, and halo size will affect the face up color and perceived depth. Commissioning a bespoke setting ensures the cutter choices and setting style work in concert, and with this Cambodian zircon the end result can be a showpiece with strong presence, technical integrity, and enduring aesthetic appeal. Contact The Natural Gemstone Company to discuss mounting tolerances, design variations, and delivery timelines.