If the bail is invisible, someone worked harder to make it that way. A concealed bail gets planned into the pendant before it's even built, then takes more fabrication time than a standard loop.
Stone Story
The flash pattern you see when a diamond moves. That is scintillation, the third optical dimension after brilliance and fire, and the one that makes a well-cut stone feel alive.
The Perfect Fit
The revolver clasp was designed as a fixed-dimension closure. Length adjustment on pieces that use it is handled structurally through the chain or bracelet, via extenders or multiple attachment points.