If you are layering pendants, bail size matters. Pieces designed for it typically have wider openings specifically to accommodate two chains at once without forcing anything through.
Built For Ease
On pendants with mechanically attached or hinged bails, a jeweler can replace or upgrade the bail if the original becomes incompatible with a preferred chain or sustains wear at the attachment point. For a gift piece that's likely to be worn frequently, confirming the bail type means knowing whether that flexibility exists if it becomes needed later.
A Storied Heritage
The ankh is the cross form that predates the Christian one, an ancient Egyptian symbol with a loop at the top, associated with life and eternal existence. Its adoption in jewelry spans millennia, outlasting the civilization that originated it.