Paprok tourmaline crystals are highly sought-after gemstones from the Paprok region in Nuristan, Afghanistan. Known for their stunning color variations, these crystals often exhibit vibrant pink, green, and bi-color (watermelon) formations. They are prized for their clarity, well-formed prismatic structure, and exceptional luster. Paprok tourmalines are popular among collectors and jewelers due to their rarity and aesthetic appeal.