Gem

A “gem” is an internet slang term used to describe something that is unique, special, or valuable. It is often used to refer to a piece of content or information that is especially interesting or helpful.

Examples:

1. Just came across this website while researching for my project. It’s a real gem! It has all the information I need in one place.

2. My friend recommended this new restaurant, and I have to say, it’s a hidden gem! The food is amazing, and the ambiance is cozy and inviting.