While erasing the obnoxious Word, I cried, "Dear Father, pray answer me one Question-What is a rhomb?"
"Mary Powell & Deborah's Diary"
Anne Manning
Thus we see that given an unchangeable crystal with cleavage planes evident, it is possible easily to reproduce the same form over and over again by splitting, whereas by simply breaking, the form of the crystal would be lost; just as a rhomb of Iceland spar might be sawn or broken across the middle and its form lost, although this would really be more apparent than real, since it would be an alteration in the mass and not in the shape of each individual crystal.
"The Chemistry, Properties and Tests of Precious Stones"
John Mastin
Thus saving the Sun his labour, and the 'primum mobile,' 'that swift nocturnal and diurnal rhomb,' which carried all the lower spheres along with it, and brought about the change of day and night.
"The Astronomy of Milton's 'Paradise Lost'"
Thomas Orchard