Blue stone bead necklace with barrel clasp looks like lapis lazuli

Dark blue stone bead necklace with barrel clasp These stones/beads are the color of lapis lazuli Each bead is a smooth yet textured oval shape See pictures for approximate measurements This color is difficult to photograph as you can see in my pictures, depending on how the light hits the necklace. It can look very dark blue or much more of a bold below color. I do not see any stamps or markings on this necklace and do not know what these beads/stone are