The size of these turquoise beads is 12 x 4mm. These are AA Grade stabilized semi-precious Turquoise gemstone beads. These turquoise beads are fine Chinese turquoise. The color of these beads is natural. They are not dyed or enhanced. 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.