Lot of Metal Buttons Pendants Beads Sparkly & Chiseled w/4 holes on back

Description

Lot of 9 pieces -- these are jewelry-making buttons/parts. They are metal bases with varying "jewels" inset. I don't know if these are plastic or glass: the black ones seem to be plastic and the sparkly ones seems to be glass. The blue ones MIGHT be turquoise. But I am not positive about any of them, to be honest. Each has 4 holes on the back for assembly (see photos).
From a non-smoking home. I will combine shipping with other items I have listed.  Thanks for looking through my listings. :)