Blue Lace Agate round semi-precious stone beads. These 4mm gemstone beads are light blue in colour and believed to promote calmness and tranquillity. Blue Lace Agate is a pretty stone with lacy bands of white and pale blue varying between opaque and translucent. These gemstone beads are sold either singularly or strung on a 16 inch/40cm strand of monofilament which contains approximately 100 4mm beads. They are a very versatile size and ideal for bracelets and tiaras.