Large Focal Turquoise Beads - All of the turquoise beads on this page are sold 'by the bead' unless specified otherwise. Turquoise is one of the most highly prized minerals in the world. Our turquoise has varying degrees of matrix, which is the brown or black veining in the stone. Because turquoise is a porous stone it is commonly stabilized or treated to seal the surface. This process protects the color and increases it's durability. Click on the image below and a new page will open offering larger views, a detailed description and purchase information.