<svg xmlns="http://www.w3.org/2000/svg">
<title>white diamond on blue; no viewBox; no width; no height</title>
<rect x="0" y="0" width="32" height="64" fill="blue"/>
<g fill="white">
<path d="M16 0 L32 32 L16 64 L0 32 Z" />
</g>
</svg>