Its possible the range you want is a little broader than @mudasobwa suggested (depends on your requirements). The nearest I can establish the relevant unicode blocks are:
1F000..1F02F; Mahjong Tiles
1F030..1F09F; Domino Tiles
1F0A0..1F0FF; Playing Cards
1F100..1F1FF; Enclosed Alphanumeric Supplement
1F200..1F2FF; Enclosed Ideographic Supplement
1F300..1F5FF; Miscellaneous Symbols and Pictographs
1F600..1F64F; Emoticons
1F650..1F67F; Ornamental Dingbats
1F680..1F6FF; Transport and Map Symbols
1F700..1F77F; Alchemical Symbols
1F780..1F7FF; Geometric Shapes Extended
1F800..1F8FF; Supplemental Arrows-C
1F900..1F9FF; Supplemental Symbols and Pictographs
So perhaps ~r/[\x{1F000}-\x{1F9FF}]/u would be an alternative.
