These appear to be luxury-style screw motif bangles inspired by the design language of Cartier “Love” bracelets, with pavé-set stones across the surface.

From left to right, the finishes look like  

Silver-tone / white gold look, Rose gold tone, Yellow gold tone

The stones look like small clear crystals or diamonds set in pavé rows. 

The screw-head motifs are decorative and evenly spaced around each bracelet.