8.79 Ct. Ametrine from Ceylon (Sri Lanka)

This exceptional bi color ametrine from The Natural Gemstone Company weighs 8.79 carats, and measures 18.48 by 9.30 by 6.98 millimeters, offering a striking balance between presence and wearability for a wide range of jewelry designs. The material is transparent and has been precision cut into an emerald shape, a choice that respects the crystal habit of quartz while providing a graceful elongated profile. The origin is reported as Ceylon, Sri Lanka, a detail that adds provenance interest because ametrine is most commonly associated with the Anahi mine of Bolivia, making Sri Lankan material comparatively less typical and therefore appealing to collectors and connoisseurs who value geographic variety. The medium color intensity presents both the citrine and amethyst tones in a pleasing equilibrium, and the bi color zoning is naturally expressed across the length of the stone, allowing viewers to appreciate the inherent duality of ametrine in a single, elegant gem.

Clarity is graded as very very slightly included when evaluated at eye level, which communicates that the stone is visually clean to unaided vision, and that any internal features are minor, well distributed, and do not interfere with light transmission or structural integrity. This level of clarity is attractive to an educated buyer because it preserves the aesthetic purity of the piece while reflecting quality rough and careful cutting. The piece has undergone a controlled heat treatment enhancement, a common and accepted practice in the trade for quartz varieties, applied to stabilize and optimize the balance between the citrine and amethyst hues. The polish is described as excellent, which means facet junctions are crisp and surfaces are free from notable abrasions, enabling unobstructed light entry and exit. Taken together, the clarity, treatment disclosure, and superior polish give a transparent account of condition and provenance that supports both trust and value.

The emerald cut geometry is central to the optical character of this ametrine, because the long rectangular table and parallel step facets emphasize color zoning and create expansive planes of reflected light. Unlike brilliant cuts that break light into a spectacle of scintillation, the step cut organizes light into broad flashes and linear reflections, which is ideal for a bi color stone where the goal is to showcase distinct color areas with clarity and control. The faceting scheme was executed to maximize light play, aligning pavilion and crown facets so that the internal color banding is clearly delineated while still allowing for lively interplay between violet and golden tones as the gem moves. The clean step facets produce a sophisticated interplay of light and shadow that highlights the depth and saturation of each color zone, and the truncated corners typical of an emerald cut add a degree of protection for the girdle, which is practical for high wear settings. For mounting, orienting the stone so that the color division runs perpendicular to the wearer creates a dramatic visual contrast, while choosing warmer metal tones enhances the citrine component, and cooler metals emphasize the amethyst component.

For the discerning buyer seeking both gemological substance and aesthetic distinction, this ametrine presents multiple reasons for consideration. The near 9 carat weight is substantial for quartz, offering the visual impact of a significant center stone without the scarcity driven premiums of the rarest gem species, and the combination of Sri Lankan origin, documented heat enhancement, excellent polish, and a clarity grading of very very slightly included at eye level provides a transparent dossier that supports confident acquisition. The emerald cut amplifies the stone's bi color personality, making it ideal for collectors, bespoke jewelry designers, and clients who appreciate calibrated proportions and deliberate facet architecture. From a care perspective, standard precautions for quartz apply, avoiding prolonged exposure to high heat or aggressive chemicals, and professional cleaning with warm soapy water and a soft brush will preserve brilliance. At The Natural Gemstone Company we stand behind the accuracy of these descriptions and are available to provide additional imagery, certificate information, or tailored mounting recommendations to ensure this ametrine is set to best advantage in any bespoke piece.