hi!
I noticed that the other day. If you go under the Resources tab, go to the right and there are 3 dots, click on that and you will find Diamonds Search. It worked for me! hope this helps!
It seems to work for me. Have you made sure that the “Loose Diamonds” tab is selected at the upper left? Also, you can try to go to “Show filters” at the upper right ... scroll down a bit .. and click on “Reset filters”....