Well to me it is rather posh, very elegant, and a bit old-fashioned. The first thing I think of is an older lady, very upright and elegant and proper. I think that parents giving this name to their daughter would most likely honoring a relative. I think
Pearl might be very sweet on a little girl though perhaps a bit heavy.
Pearlie would make a cute nickname in that case and might lighten the name a bit.
I personally like
Pearl better as a middle name, it's one of my favorites:
Amy Pearl,
Amelia Pearl,
Jocelyn Pearl,
Julia Pearl,
Lydia Pearl. WDYT?
Josh Groban - "Awake" and "Weeping"!