Meaning
A large diamond shape in blue, standing on one point. Like its orange partner, it is mostly decorative, offering a cool, calm bullet or section marker.
Businesses and schools like it for neat announcements and info posts because blue feels trustworthy and calm: “🔷 Enrolment opens Monday 🔷 Classes start next month” Pair it with 🔹 for sub-points. Some also use it as a simple gem or crystal icon in games.