The Chinese seed beads differ from other seed beads. They have an *older* look, especially in the opaque colors, and are popular for that reason.
Abbreviations for the finish on the beads:
OP - Opaque - No Light Passes Through the Bead
TR - Transparent - Some Light Passes Through the Bead
S/L - Silver Lined - The Hole is Silver Lined
C/L - Color Lined - The Hole is Lined with Color
LSTR - Luster - Pearl Like Finish
AB or RNBW - Aurora Borealis or Rainbow