5.21 Ct. Ametrine from Madagascar

This transparent 5.21 carat cushion shape bi color ametrine is an exceptional specimen for the discerning collector, measuring 10.70 by 10.53 by 8.35 millimeters, with a mixed brilliant cut that balances scintillation and depth. The stone exhibits classic ametrine zoning, the natural juxtaposition of amethyst purple and citrine golden tones, presented here with medium color intensity that offers both presence and versatility in design. Clarity is graded as very very slightly included, evaluated at eye level, indicating that the gem appears eye clean with only minute inclusions detectable under magnification, a rarity at this size for bi-color material. An excellent polish enhances surface luster and facet definition, maximizing the mixed brilliant cut performance so that light is returned as crisp brilliance and lively flashes. Origin is Madagascar, and the stone has been heat treated, a standard and disclosed enhancement intended to stabilize and harmonize color, information that The Natural Gemstone Company provides transparently for informed acquisition.

For the educated buyer, this ametrine represents a compelling combination of rarity, size, and gemological quality that makes it a superb addition to a high-end gemstone collection. Ametrine is prized for its natural color zonation, and a well-cut, eye clean 5.21 carat cushion offers both display potential and wearable elegance, equally suitable for a museum quality piece or a signature ring. The mixed brilliant cut has been selected to optimize optical performance in an asymmetric color field, producing balanced brilliance across the purple and yellow zones. The disclosed heat treatment and Madagascar origin are important provenance and treatment details that preserve long term value, and the VVS level clarity at face view supports superior light performance and potential for premium settings. For collectors interested in complementary contrasts, consider pairing this bi color ametrine with White Opal in jewelry designs, the soft opalescence accentuating the ametrine’s clean color boundaries. The Natural Gemstone Company stands behind the gemological description and provenance, and we recommend secure, professional mounting and standard gem care, avoiding prolonged heat or harsh chemicals, to maintain the stone’s polish and color. This ametrine is a refined, technically strong selection for any high-end collection seeking a standout bi-color gem with verifiable quality.