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

This remarkable transparent 6.78 carat cushion shape greenish yellow, lemon quartz measures 13.05 x 11.11 x 7.35 mm, and presents a carefully considered balance of size and proportions that will read beautifully in a range of fine jewelry applications. The gem is faceted in a mixed brilliant style that accentuates its internal clarity and color distribution. With a medium color intensity, the hue sits squarely in the attractive lemon spectrum, offering a lively greenish yellow cast that remains natural and even across the table and pavilion. As a loose specimen for bespoke work, its dimensions and weight place it in the category of statement center stones, ideal for a ring, pendant, or bespoke cocktail piece that is intended to make an immediate visual impact.

The cutting execution demonstrates an advanced understanding of light dynamics for quartz. The mixed brilliant cut combines a step oriented pavilion girdle region with a brilliant oriented crown, creating controlled light return and balanced scintillation. The crown facet configuration moderates surface brilliance while the pavilion facet planes are engineered to maximize internal reflection, producing crisp flashes rather than scattered haze. Facet junctions are well defined and symmetrical, and the table is proportioned to optimize both depth perception and surface brilliance. The excellent polish ensures minimal light scattering at facet boundaries, so the stone exhibits a clean, glassy lustre and vibrant internal flashes under direct illumination. These attributes contribute to a highly legible faceting pattern that will translate into high performance in settings where light access is paramount.

From a clarity and material integrity perspective, the gem is graded eye clean at typical viewing distances, indicating the absence of inclusions that would interrupt the visual field to the naked eye. This clarity grade enhances the perception of color purity and ensures that the faceting does not have to compensate for internal disruption. The piece is uncompromised by enhancement, the color and clarity are wholly natural, and the origin is Madagascar, a source known for producing quartz material with attractive hues and stable optical properties. Quartz as a species has a refractive index in the range 1.544 to 1.553 and a Mohs hardness of 7, which together provide reliable wearability and predictable light behavior for daily use jewelry. The combination of natural color, eye clean clarity, and a robust material profile makes the gem suitable for secure settings and everyday wear after proper mounting.

For a gift that reads as both refined and technically superior, this lemon quartz from The Natural Gemstone Company offers a compelling narrative. Its substantial weight and intelligent cutting produce a gemstone that will sit prominently in a design, delivering sustained visual interest through controlled brilliance and scintillation. For the recipient who appreciates the science of gemstones, the stone speaks to deliberate craftsmanship, with clear evidence of precise facet planning, consistent polish quality, and an honest, unenhanced origin. Customization options are broad, from low profile bezel mounts that showcase color to elevated prong settings that maximize light entry and dynamic sparkle. Presented as a gift, the gem signals an investment in both aesthetic and structural quality, a piece that will be admired for its optical performance and respected for its material integrity. The Natural Gemstone Company stands behind the provenance and technical descriptions of this specimen, and our team can advise on setting choices to preserve the stone, and to ensure the final piece delivers the intended visual and tactile impact.