5.98 Ct. Bi Color Ametrine from Ceylon (Sri Lanka)

This listing describes a single, transparent bi color ametrine weighing 5.98 carat, cut in a cushion shape, with precise dimensions of 17.32 by 10.58 by 4.85 mm. The stone presents a classic bi color division between violet and golden tones, displayed across a mixed brilliant cut that balances faceted brilliance with a broad table area. The gem is eye clean to the typical casual observer, with a clarity grade of very slightly included when evaluated at eye level, and it has an excellent polish that enhances light return and surface crispness. The specimen is heat treated, and its geographic origin is Ceylon, Sri Lanka, a region known for producing fine, well colored gemstones.

The cutting style is a mixed brilliant cut, selected to maximize the visual interplay between the purple and yellow zones while preserving weight and symmetry. The proportions allow for strong internal reflection across the pavilion facets, while the crown faceting provides focused color separation and scintillation. Medium color intensity ensures that both the amethyst and citrine components are distinctly visible without appearing overly saturated, a characteristic that contributes to the gem clarity and overall aesthetic harmony. The excellent polish contributes to sharp facet junctions and a lively surface appearance, qualities that are important when assessing light performance and overall finish.

The 5.98 carat weight is a primary determinant of this piece value and rarity, and it is worth detailing how weight affects market perception for ametrine. Ametrine is a naturally occurring, dual colored variety of quartz that displays both amethyst and citrine zoning within a single crystal. Well defined bi color zoning in specimens approaching six carats is comparatively uncommon, especially when combined with transparency and clean eye level clarity. Weight in gemstones has a nonlinear influence on price per carat, as larger, gem quality stones are rarer and more sought after, leading to a premium that grows disproportionately as size increases. In practical terms, a 5.98 carat ametrine of this quality will command a higher per carat value than multiple smaller stones of equivalent total weight, due to the greater rarity of a single large crystal with balanced color and good clarity.

From a lapidary and jewelry perspective the substantial 5.98 carat weight affords design flexibility and presence. The cushion shape and the dimensions 17.32 by 10.58 by 4.85 mm are well suited to become the focal point in a variety of settings, including solitaire rings, statement pendants, and bespoke cocktail pieces. The mixed brilliant cut provides substantial light return and strong color contrast, which benefits open settings and moderate bezel work that allow light to enter the pavilion. Given quartz hardness, ametrine has Mohs hardness 7, and while it is suitable for everyday wear in many settings, prudent placement and occasional professional cleaning will preserve its finish and color vibrancy. The heat treatment applied to this stone is common practice to stabilize and enhance color, and it is compatible with conventional jewelry making and routine maintenance.

The Natural Gemstone Company provides this description to convey the characteristics that underlie the gem assessment and market value. The combination of a near six carat weight, transparent material, very slightly included clarity at eye level, medium color intensity, mixed brilliant cut, and excellent polish, together with the documented origin of Ceylon, Sri Lanka, creates a compelling profile for collectors and designers seeking a rare, visually distinctive ametrine. For clients considering custom mounting or requesting additional documentation and imagery, The Natural Gemstone Company is available to assist with technical details, setting recommendations, and secure handling to ensure the gem achieves its full potential in finished jewelry.