IE8 & Mysql & Sql server (UTF-8) Not support the files include characters [\xf0\x9d\x90\x80-\xf0\x9d\x9f\xbf].

We can replace them with *HTML Entity (decimal)* to save them into DB server, if you want use the binary of these characters, you can replace them back.

But Firefox can rightly display some of them.

The outcome of *Wikipedia*, Mysql server (also IE8) not support high code characters :

http://bugs.mysql.com/bug.php?id=14052

useful urls:

http://www.isthisthingon.org/unicode/pfpopup.php?page=1D&subpage=4

http://www.fileformat.info/info/unicode/block/mathematical_alphanumeric_…

The best solution is to upgrade to MYSQL 6.0 and use utf-16 or utf-32 encoding, but Mysql 6.0 is so new and utf-16 is not widely supported by browser or open source software.