Spring Ring Clasps:
This is a very commonly used type of clasp in jewelry design. Typically, this type of clasp opens when a little lever in a small circular ring is pushed backwards. When it opens, the other end of the bracelet, which can be a loop or a chain, is inserted and the lever is released to snap shut. Such types of clasp use a spring mechanism for the opening and shutting process. They are quite sturdy and easy to handle and hence they are quite popular.
Lobster Claw Clasp:
Just as the name signifies, this type of clasp looks like the claw of a lobster, but they are highly customizable to suit the need of a particular piece of jewelry. They are quite easy to open and close. This type of clasp has a tiny spring in its mechanism, which helps to keep it closed until you push the lever to open it.
These are widely used in fashionable bracelets and come in a variety of designs. Toggle clasps generally come in two pieces, each of which is attached to one end of a bracelet. Typically, one section of the clasp is a circular ring or similar. The other half is comprised of a T shaped bar that needs to be inserted through the ring and thus secure the bracelet in place. These types of clasps are not as strong as the spring and lobster claw clasps but, since they come in numerous sizes and designs, they are widely used in designing stylish bracelets.