How do you use hidden gems in a sentence?

How do you use hidden gems in a sentence?

Example sentences hidden gem

It is a real hidden gem and a great place to recharge your batteries. The Sun (2016)
The competition may prove to be the hidden gem in the calendar.
The brochure calls it a hidden gem, which is more or less true. Times, Sunday Times (2010)

Example sentences hidden gem
  1. It is a real hidden gem and a great place to recharge your batteries. The Sun (2016)
  2. The competition may prove to be the hidden gem in the calendar.
  3. The brochure calls it a hidden gem, which is more or less true. Times, Sunday Times (2010)