6.78 Ct. Lemon Quartz from Madagascar

This specimen is a transparent 6.78 carat cushion shape lemon quartz, with precise finished dimensions of 13.05 millimeters by 11.11 millimeters by 7.35 millimeters, and a measured depth of approximately 60.8 percent relative to the average girdle diameter, a proportion that supports effective light return for a stone of this profile. The cutter elected a mixed brilliant cut, incorporating a brilliant facet arrangement on the crown to maximize scintillation, and a modified step and pavilion architecture to preserve weight while creating broad flashes and a lively pattern. Clarity has been evaluated as eye clean at standard viewing distance, indicating the absence of inclusions visible without magnification, and the material is described as having medium color intensity in the lemon yellow range, providing a vivid but not saturated tone that reads as fresh and luminous under both natural daylight and controlled lamps. The polish quality is graded excellent, with crisp facet junctions and smooth facet planes that allow unimpeded light transmission, and there is no enhancement reported, ensuring the present color and clarity are entirely natural, with provenance traced to Madagascar.

From a gemological perspective this lemon quartz displays the intrinsic optical and physical properties typical of quartz, with a refractive index in the range expected for quartz, low birefringence near 0.009, and very modest dispersion, a combination that produces strong single color presence with restrained fire, emphasizing pure hue and bright reflections rather than spectral flashes. The mixed brilliant cut choice amplifies this effect by breaking large areas of pavilion color into controlled scintillation, which is particularly effective in a cushion silhouette because the softened corners and rounded outline concentrate light toward the center field while the pavilion facets return lively flashes to the viewer. The eye clean clarity grade and the excellent polish reduce light scattering from surface or internal features, yielding high apparent transparency and a clean table window that showcases the stone core. Hardness and wearability are practical for fine jewelry, quartz registering at Mohs hardness seven, and the specific gravity around 2.65 favors a substantial hand feel without excessive bulk, a combination that supports use as a prominent ring center or a significant pendant element.

For gifting and bespoke design applications this 6.78 carat lemon quartz is a remarkable choice for someone who appreciates technical quality and refined visual presence, a stone that will read as a statement piece while still being eminently wearable. Its cushion geometry and moderate depth make it well suited to a range of mounting options, including a protective bezel that emphasizes durability, a halo setting that enhances apparent size and color contrast, or a four prong cathedral style that maximizes light from all directions. Metal pairings will influence the perceived warmth of the lemon hue, with yellow gold enhancing the citrus tones, rose gold adding a nuanced vintage warmth, and platinum or white gold presenting the color with crisp, modern contrast. Because the material has not been treated the color will remain stable, a key consideration for milestone gifts where longevity and provenance matter. The Natural Gemstone Company stands behind the gemological attributes and origin of this piece, and we recommend professional setting integration and routine care that includes avoiding prolonged exposure to extreme heat and aggressive chemicals, and periodic inspection of the mounting to protect the stone edges. Presented in an elegant setting this Madagascar lemon quartz will deliver a memorable visual signature, making it an exceptional striking gift for anniversaries, engagements, or any occasion where a technically superb and naturally beautiful gemstone is desired.