These are a glass Opaque Black seed bead. They are very small 16/0 or 1.3 mm Rocilles round, packaged as 2 - 15" strung beads. These are older stock, made in Czech Republic. Czech beads are excellent quality with vivid colors.
Czech glass seed beads exhibit superior quality, outstanding uniformity, making them the perfect choice for any beading project!
Slight color variations due to natural properties of glass cannot be avoided.