A miniaturized coupling for jewelry includes a male coupling and a female coupling, each of which is millimeter-sized or sub-millimeter-sized and each of which is attached to or suited to be attached to a respective jewelry component. The male coupling has a locking member configured to be inserted into the female coupling through an opening into an interior of the female coupling. A resiliently-biased, snap connector located in the interior of the female coupling, so constructed that when the locking member is inserted into the female coupling it initially moves and then is retained by the snap connector. An actuating pin in the female coupling is configured to move the snap connector to release the locking member and thereby disengage the male and female couplings from each other. The actuating pin has an outer surface accessible at an outer surface of the female coupling.