Natural Sapphire, 20.11 ctAn exceptional heart-shaped blue sapphire weighing 20.11 carats, certified by the internationally recognized LOTUS Gemology laboratory. The stone is faceted and measures 19.61 x 19.18 x 7.31 mm, showcasing a deep and natural blue color. The certificate (No. 8357-4958, issued February 13, 2024) confirms that the sapphire is completely natural with no indications of heat treatment or enhancements—making this a genuine collector's gem and an exclusive choice for high-end jewelry.Origin: Basalt-related (likely from Africa or Australia as per LOTUS standards)Shape: HeartCut: FacetedColor: Deep natural blueWeight: 20.11 ctCertification: LOTUS GOLD (comes with report and card, fully verifiable online)Treatment: None (100% natural, untreated)This stone combines impressive size with excellent clarity and vibrant color, ideal for exclusive jewelry settings or as an investment piece. It comes complete with certification and official LOTUS packaging.For international buyers: "Heart-shaped natural blue sapphire, 20.11 carats, certified by LOTUS Gemology. Untreated, faceted, with excellent color and clarity. Comes with LOTUS GOLD certificate. Perfect for collectors and fine jewelry."Include images of the stone and certificate when listing. Emphasize the rarity of such large, untreated sapphires on the market along with the international certification