google-material-design-icons/android/maps/diamond/materialiconsoutlined/black/res/drawable/outline_diamond_20.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="20dp"
    android:height="20dp"
    android:viewportWidth="20"
    android:viewportHeight="20"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M16,3H4L2,8l8,9l8,-9L16,3zM8.21,7.25L9.59,4.5h0.82l1.38,2.75H8.21zM9.25,8.75v5.15L4.67,8.75H9.25zM10.75,8.75h4.58l-4.58,5.15V8.75zM16.08,7.25h-2.62L12.09,4.5h2.9L16.08,7.25zM5.02,4.5h2.9L6.54,7.25H3.92L5.02,4.5z"/>
</vector>