Tourmaline beads are classified as a semi-precious stone and the gemstone comes in a wide variety of colors and shapes. Tourmaline beads are the most colorful of all gemstones. It occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gemstone colors. Tourmaline beads can be found in fairly large transparent crystals, and these can produce very large exquisite and flawless gemstones. Tourmaline beads are used as a large pendant stone, in bracelets, rings, and earrings. Pink and green Tourmalines beads from certain localities contain tiny, parallel inclusions, causing them to display a strong cat's eye effect when polished.