Beads, Lapis (natural), 4-6mm hand-cut faceted Roundel B grade, Mohs hardness 5-6 Sold per 4.5 inches Royal Blue color beads. Lapis lazuli is a deep blue with a touch of purple and flecks of iron pyrite. Lapis consists of Lapis (blue, calcite (white streaks) and silver flakes of pyrite. Deep blue color gemstones are of best kind.