how to put icons in select

<select title="Select your spell" class="selectpicker">
  <option>Select...</option>
  <option data-icon="glyphicon glyphicon-eye-open" data-subtext="petrification">Eye of Medusa</option>
  <option data-icon="glyphicon glyphicon-fire" data-subtext="area damage">Rain of Fire</option>
</select>