Here is her thread when she got her Calcaire City. I hope this helps.
http://forum.purseblog.com/balenciaga/my-calcaire-city-has-arrived-71087.html
Here is my calcaire twiggy, indoor,without flash.
He has no undertone. it's a mate white, but it's difficulte to explain !
Not a snow white, more powdered.
I hope it'll help.
http://forum.purseblog.com/balenciaga/as-promised-my-first-b-bag-pic-99079.html
this is my calcaire city~~~ hopefully it helps~~