Snowflake
HTML Entity Browser Test:

U+2744 is the Unicode hex value of the character Snowflake, which is categorized as "other symbol" in the Unicode 6.0 character table.

Unicode Character Information
Unicode Hex U+2744
Character Name SNOWFLAKE
General Category Other Symbol [Code: So]
Canonical Combining Class 0
Bidirectional Category ON
Mirrored N
Unicode Character Encodings
Snowflake HTML Entity ❄ (decimal entity), ❄ (hex entity)
Windows Key Code Alt 10052 or Alt +27441
Programming Source Code Encodings Python hex: u"\u2744", Hex for C++ and Java: "\u2744"
UTF-8 Hexadecimal Encoding 0xE29D84
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 10052) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +2744) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Snowflake character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.