Exquisite 3.1 Carat Natural Violet Blue Tanzanite - IGI Certified Item Description: Species & Variety: Natural Zoisite, Tanzanite Shape & Cutting Style: Emerald cut Weight: 3.1 Measurements: 8.34 X 7.02 X 5.57 mm Color & Transparency: Deep Bluish Violet , Transparent Tanzanite is a rare, vibrant blue-to-violet variety of the mineral zoisite, found exclusively near Mount Kilimanjaro in Tanzania. Known for its intense pleochroism, it displays different colors (blue, violet, burgundy) depending on viewing angles. It is a popular gem often heat-treated to enhance its rich violet-blue shades Certified by IGI, guaranteeing authenticity and quality. Ideal for collectors or as a stunning piece for jewelry design. Photography is approximate, but the gem’s allure is truly remarkable.