6.70 Carat Natural Loose Lagoon Blue Tourmaline Cushion Cut Afghan Gemstone

Mined from the famous gem-bearing pegmatites of Afghanistan, this 6.70 Carat Natural Loose Lagoon Blue Tourmaline displays an exquisite, highly prized lagoon hue, blending vibrant turquoise blue with subtle mint and seafoam green undertones. Precision-crafted into an elegant cushion cut, its soft rounded perimeter and strategically angled pavilion facets optimize light performance, producing a bright, continuous display of edge-to-edge scintillation. The gemstone boasts superior eye-clean clarity and exceptional crystal transparency, allowing light to traverse fluidly through its interior without dark extinction zones or cloudiness. Completely natural, unheated, and untreated, this pristine 6.70-carat Afghan tourmaline pairs a rare oceanic color profile with substantial, ring-ready proportions, making it an extraordinary centerpiece for a custom cocktail ring, a bespoke solitaire pendant, or an elite gemstone investment collection.