2.54 Ct. Greenish Yellow (Lemon Quartz) Quartz from Madagascar

This specimen from The Natural Gemstone Company is a transparent, greenish yellow lemon quartz, 2.54 carat, round shape, with precise measured dimensions of 8.76 by 8.82 by 6.83 mm. The cutting style is faceted, executed as a fantasy cut three dimensional design, combining a traditional round outline with an intricate internal pavilion motif. Clarity is graded eye clean when evaluated at normal viewing distance, with no visible inclusions to interrupt light travel through the body of the stone. Color intensity is medium, presenting a stable greenish yellow hue that is evenly distributed across the pavilion and crown. The polish is excellent, which ensures minimal surface diffusion and maximizes transmission and reflection. There are no enhancements, the material is natural quartz sourced from Madagascar, and all of the measurements and observations are supplied with the transparency expected from The Natural Gemstone Company.

Technically, the fantasy cut leverages non conventional facet arrays to generate complex internal reflections, rather than relying solely on traditional brilliance facets. The crown features a relatively broad table and a sequence of elongated star and kite facets that channel incident light into a radial starburst effect. The pavilion incorporates a layered pavilion with additional micro facets and beveled pavilion facets that act as internal mirrors, increasing the number of light return pathways. With a refractive index range characteristic of quartz at approximately 1.544 to 1.553, the critical angles for total internal reflection are moderate, and the cutter has exploited this by optimizing pavilion depths and crown angles so that light entering the crown is frequently redirected back through the table and star motif. Birefringence in quartz is low, approximately 0.009, so the gem preserves coherent color transmission without double imaging. Dispersion for quartz is modest at about 0.013, therefore fire is subtle rather than prominent, and the visual emphasis is on pattern and flash rather than spectral dispersion.

Under varying lighting conditions the optical personality of this lemon quartz shifts in predictable, technically explainable ways. In cool daylight, which provides a broad continuous spectrum with a bias toward blue, the medium greenish yellow color reads as a fresher lemon tone, and the starburst pavilion pattern exhibits high contrast scintillation, with crisp bright flashes and darker negative areas created by the internal facet architecture. Under warm incandescent light the color warms toward a more golden yellow, reducing perceived contrast but increasing overall warmth and depth, as longer wavelengths dominate and are more strongly transmitted by the material. Under neutral white LED or halogen sources the balance between color and pattern is preserved, with LEDs that render high CRI showing the most faithful hue while halogen, with its strong continuum spectrum, enhances mid tone saturation. Under direct spotlighting the fantasy cut produces intense specular highlights and pronounced scintillation due to the concentrated incident angles, whereas in diffuse lighting the starburst becomes gentler and the overall appearance emphasizes translucency and internal texture. When backlit in a pendant setting the pavilion pattern becomes a glowing lattice, with transmitted light emphasizing the internal carving and creating a halo effect around the table. In movement, the gem will exhibit dynamic flashes of brightness and pattern inversion, governed by facet orientation relative to the light source.

From a craftsmanship and use perspective this lemon quartz is suitable for high precision jewelry where the cutter designed effect can be fully appreciated. The combination of excellent polish and a three dimensional fantasy pavilion requires secure mounting that does not obscure the girdle or impede light passage through the crown. Prong or claw settings that expose the table and allow light from below will maximize the designed internal reflections, while closed bezel settings will moderate the pattern but increase durability. Given the medium color intensity and eye clean clarity, this gem is appropriate for center stone applications in rings, pendants, and bespoke pieces where pattern and controlled brilliance are the primary design objectives. As a natural, non enhanced quartz from Madagascar, it offers provenance and material integrity for knowledgeable buyers seeking a technically interesting stone. The Natural Gemstone Company provides full disclosure on cutting style, measurements, and origin, and this specimen exemplifies the precision cutting and quality control that collectors and designers require.