Rolo Chain: A chain which features a string of round shaped links symmetrical in size  
Curb Chain: Oval shaped rings that are twisted and often diamond cut so they form a flat chain
Diamond Cut Chain: Edges of each link are cut away causing light to reflect in a spectacular manner resembling the shine of a diamond 

Lobster Claw Clasp: A hinged jewelry closure shaped like a claw that is used to secure heavier pieces by fastening jewelry with a spring device
Spring Ring Clasp: A delicate, circle shaped clasp that works by simply pulling back a small spring apparatus to secure the other end of the chain