Beads, Lapis (natural), 17-20mm hand-cut faceted Oval Tumble C grade, Mohs hardness 5-6. Sold per 7 Inches strand 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.