19.75 Ct. Purple Amethyst from Madagascar

This 19.75 carat cushion shape amethyst, with exact dimensions 19.81 x 15.96 x 10.07 mm, exemplifies precision cutting and material quality. The stone is faceted with a classic checkerboard crown, a cutting choice that increases surface scintillation and breaks up large flash zones while preserving deep color saturation. The cushion outline is slightly elongated, allowing the checkerboard pattern to play across a broad table, producing lively facet contrast when viewed from multiple angles. Clarity is very slightly included at eye level, with inclusions that do not interfere with its transparency or light transmission. Color is graded as vivid in intensity, a strong and even purple that benefits from Madagascar origin characteristics. The polish is excellent, resulting in clean facet junctions and a high luster that maximizes light return. No enhancement has been applied, which means the color and tone are entirely natural, and the gem displays the stable refractive behavior expected of quartz family minerals, with predictable light dispersion and consistent brilliance across the crown and pavilion.

For custom jewelry design the technical attributes of this amethyst lend themselves to a range of complementary gemstone pairings and settings. A white diamond halo using small brilliant cuts will increase perceived brightness and contrast, emphasizing the amethysts vivid saturation and the checkerboard crown facets. For color contrast, calibrated green tsavorite garnets or chrome diopside as accent stones provide a strong complementary hue pairing, and faceted yellow sapphire or citrine can introduce a warm counterpoint that shifts the eye toward the stone center. Metal choice will influence perceived color, with 18k yellow gold warming the purple to a more royal violet, and platinum or 18k white gold preserving the pure cool tone. From a setting perspective, a four or six prong open gallery will maintain maximum light entry and preserve the checkerboard effect, while a low bezel with polished edges will protect the girdle and showcase the excellent polish. The Natural Gemstone Company recommends considering a slightly raised mounting with an open pavilion to optimize light return and to keep the natural, untreated character clearly visible in finished pieces.