Gorgeous blue green Turquoise beads. These highly polished round beads are gently graduated from 7-10mm on average. Rich blue green coloring with golden brown to black matrix. Each bead is unique in coloring and amount of matrix, some strands have less matrix than others.. This semi precious gemstone is said to be the stone of communication, helping those who have a fear of public speaking. In the same vein, turquoise is considered to be a stone of friendship, strengthening the bond between friends. These turquoise beads are very limited.