\documentclass{standalone}

\usepackage{tikz}
\usepackage{shapes}

\begin{document}
\begin{tikzpicture}
\foreach\k in{1,...,4}{
  \foreach\l in{1,...,4}{
    \diamond{cyan}{(\k+\l,\k-\l)}
  }
}
\end{tikzpicture}
\end{document}