Meaning of "lozenges of scented soaps"

In a website addressed below, there is a phrase I can’t figure out the exact meaning, lozenges of scented soaps.

Since “lozenge” means the shape of diamond, does the underlined part (lozenges of scented soaps) means ‘soaps with diamond shape’?

Thanks in advance.

http://www.actionforhappiness.org/news/prioritising-the-things-that-really-matter?tag=1757

The old folk crouching by their peat fires will tell their disbelieving grandchildren of standing naked midwinter under jet streams of hot clean water, of lozenges of scented soaps, and of thick white towels as big as togas, waiting on warming racks.