2.96 Ct. Green Zircon from Ceylon (Sri Lanka)

This specimen is a transparent green zircon weighing 2.96 carat, presented in a refined cushion outline with exact dimensions of 9.42 by 7.33 by 4.97 millimeters. The cutter executed a mixed brilliant faceting scheme, combining a brilliant style crown with a modified pavilion that optimizes internal reflection and dispersion. The overall finish is described as excellent polish, with crisp facet junctions and well controlled symmetry, which supports even light return across the table and bezel facets. Given the length and width proportions, and the explicit depth of 4.97 millimeters, the pavilion depth measures approximately fifty nine percent of the average girdle span, a proportion that sits comfortably inside the ideal range for cushion cuts and preserves both face up spread and depth based scintillation. The origin is Ceylon Sri Lanka, and no enhancement has been applied, which means the color and optical behavior are intrinsic to the natural crystal structure. The Natural Gemstone Company presents this stone as an unheated, untreated example of fine Sri Lankan green zircon, with cutting choices made to respect the material s strong dispersion and birefringence.

Color behavior in this example is intense and complex, offering a saturated green that reads as forest green to olive depending on viewing angle and lighting, with distinct pleochroic tendencies. Under directional light the stone shows a slightly different hue axis, ranging from a bluish green to a greener yellow tone, which is characteristic of zircon s dichroic response and high birefringence. Optical parameters for zircon favor brilliance and fire, with a refractive index generally in the range of approximately 1.92 to 1.99 and a dispersion value that approaches diamond class material, which produces noticeable spectral flashes when the mixed brilliant pattern is well proportioned. The cutter utilized smaller crown facets to increase sparkle and larger pavilion facets to accentuate dispersion, a deliberate trade that yields intense color concentration while preserving lively flecks of fire. The excellent polish enhances this effect, reducing light leakage at facet junctions and allowing the stone to display both saturated body color and bright facet scintillation without appearing dull or washed out.

Clarity on this green zircon is graded as slightly included when evaluated at eye level, with inclusions that are subtle and generally not disruptive to light performance. Inclusions in Ceylon zircon are commonly small crystal fragments or minute growth features that can appear as pinpoints or faint clouds, and in this gem they have been oriented and masked by facet placement to minimize visibility from the face up view. Because the cutting is mixed brilliant, the strategic positioning of crown facets and the proportional pavilion depth help to hide inclusions near the girdle and to channel light around internal features, resulting in superior apparent clarity relative to stones with the same internal characteristics but less thoughtful cutting. For clients seeking certification, the inclusions are consistent with natural origin and do not indicate filling or clarity enhancement. The excellent polish and tight symmetry further reduce the perceptibility of inclusions, and when set in a well designed mounting the stone will show strong face up appeal while retaining the natural inclusions that confirm its provenance.

Durability considerations are important for natural zircon and must be weighed against its optical virtues, the hardness on the Mohs scale for zircon typically falls in a range between six point five and seven point five, depending on crystal quality and composition. This places zircon below sapphire and ruby, which rate nine, and well below diamond, which rates ten, but above many common decorative gems. The relative hardness means that zircon is sufficiently durable for many types of jewelry, but it is advisable to avoid daily exposure to abrasive contact if the gem is mounted in an exposed ring setting without protective elements. For practical use the stone is very suitable for pendants and earrings, and for rings it performs best when set with prongs that include protective shoulders or a bezel that reduces edge contact. Thermal sensitivity is also a factor, as natural zircon can be affected by high heat and by strong, rapid temperature changes, therefore professional jewelers should avoid torch work directly against the stone and consumers should remove the piece before exposure to heat or harsh chemicals. Cleaning is recommended with warm soapy water and a soft brush, mechanical ultrasonic and steam cleaners are not recommended for untreated green zircon. The stone s specific gravity is relatively high, providing a pleasing substantial feel for its size, and the combination of intense natural color, expert mixed brilliant cutting, and excellent polish make this 2.96 carat Ceylon green zircon an exceptional candidate for collectors and connoisseurs who value optical performance balanced with careful handling. For further technical consultation regarding mounting options, certification, or appraisal please contact The Natural Gemstone Company, we will advise on settings that preserve both the aesthetic and the structural integrity of this fine natural zircon.