A book that is open to section 22.4 has a ring placed on it.
A book is open to a page with 22.4 Unitary Evolution.
A siver wedding band laying inside an open book on a page that says Unitary Evolution.
A silver or platinum ring is on middle of an opened book below the section 22.4 Unitary evolution.
A wedding ring photographed on a book open to a page about Unitary evolution