Interchangeable jewelry system with invisible coupling device

A jewelry element having two ends and having a secure non visible two part male-female coupling device for connecting said ends of the jewelry element, said coupling device comprising:

• a male component comprising an elongated prong having a beveled spine on a surface thereof, said prong comprising a hook, a snap, and a stop on an underside of said prong, said prong being permanently affixed to and extending from one of said ends of said jewelry element, said stop being formed of a vertical edge at said one of said ends of said jewelry element;
• and
• a female component comprising a soleplate, said soleplate having a terminus at one edge, said soleplate having two apertures, one of said apertures being the same size and shape as said prong and having a leading edge, said leading edge being located opposite said terminus, said one of said apertures being larger than the other aperture of said two apertures, said other of said apertures calibrated to accommodate said snap, said apertures being spaced apart by a catch bar, said soleplate further comprising a specifically designed curved substructure which forms a segment of a circumference of a circle, said segment of a circle beginning at said leading edge of said one of said apertures, said catch bar being located at the center of said segment of a circle, said curved substructure extending beyond said segment of a circle to a nadir, said nadir forming a V-shape at a bottom of said substructure, said soleplate being a permanent integral part of said other of said ends of said jewelry element, said terminus being formed of an outside edge of said other of said ends of said jewelry element.