Hmmm...I'm wondering if it could be Blue Angel. Or if the flowers are pure white, maybe Snowden, but it doesn't look like they are pure white in this pic.

Is this the missing Halcyon you were mentioning on Friday? Looks like it could be, although I can't be sure of leaf size here since there is no comparative item (pen, beer can?) Don_r thinks this is Blue Angel, and he may very well be right, if the leaves are larger than you would find on Halcyon. Time will tell: Blue Angel will be huge (seven feet across with enormous leaves, while Halcyon remains medium-sized, say 30 inches).

Steve

I think it's Blue Angel too. It has just finished flowering which helps with the ID.

Steve

Too big for Halcyon. And Halcyon has darker flowers too.

I agree that it is too big for Halcyon. I do have a Halcyon (in addition to the "missing" one), and the leaves on this are about twice the size. Halcyon seems much bluer (but that might be location) and the flowers are, as Don says, darker.

The flowers on this one are very very pale lavender, but probably not pure white.

I actually have multiple plants that look exactly like this, that came in my bargain flat.

Leaf of this plant

Halcyon

Halcyon leaf and flower

Flower of this one

Size of this relative to Gold Standard