What is the search for that rare gem, which is so easy? It is the one who is familiar with its depths that sinks into it.

This profound couplet suggests that while finding something rare (a gem) is easy, the true struggle lies in understanding its depth. The difficulty isn't in the search itself, but in the realization that you are intimately acquainted with its depths. It speaks to the overwhelming nature of true love or profound knowledge—once you know the depth, you can never return to the surface.