The gem stone is shorthand for anything precious, expensive, or 'a total gem' — a person, deal, or hidden find worth bragging about, and it shows up constantly in rap-adjacent flex captions and jewelry ads. Introduced in the very first 2010 Unicode emoji set (inherited from Japanese carrier pictographs), it was drawn as a diamond long before 💍 existed as a separate engagement symbol, so early users overloaded it for weddings too.
Keywords: diamond, engagement, gem, jewel, money, romance, stone, wedding