Abstract: An interchangeable jewelry system based on a simple and secure two part coupling device which is a combination of a male prong containing a hook and a snap, and a specifically designed female soleplate having a curved substructure. The shape of this special soleplate guides the prong to a point at which it can be lifted to engage the hook, and rotated to engage the snap. The size and shape of the prong relative to the specific design of the soleplate structure prevents it from being disengaged while being worn. The elements of the coupling device are an integral part of, and incorporated into, the back sides of a wide variety of jewelry elements, resulting in a coupling invisible from the front or the sides of the assembled item of jewelry, the ultimate effect being that of an unalterable entity. All elements in a collection, having these same components, are interchangeable in a countless number of combinations.