The closure should not look or feel separate. A single latch clasp made in matching yellow, white, or rose gold, or sterling silver, keeps the jewelry consistent in both metal and finish.
Stone Story
Lab-grown diamonds are not cubic zirconia or moissanite. The latter two are distinct mineral species with different chemistry, optical properties, and physical characteristics. A lab-grown diamond is pure crystalline carbon, identical in every measurable property to a mined diamond.
Visually Speaking
On a lobster clasp, the lever tab projects from the body and must be retracted by finger pressure to open the gate. The mechanism is external and visible from any angle. On a push button clasp, the release button sits flush with the outer surface and triggers an internal spring when depressed. The body of the push button clasp presents a smooth exterior with no projecting elements. Both mechanisms are legible by touch, but only the lobster clasp is legible by sight from a distance.