app/src/main/res/drawable/cards_diamond.xml
<vector android:height="28dp" android:viewportHeight="24"
android:viewportWidth="24" android:width="28dp" xmlns:android="http://schemas.android.com/apk/res/android">
<path android:fillColor="#FF000000" android:pathData="M19,12L12,22L5,12L12,2"/>
</vector>