The diamond suit emoji represents a playing card symbol.
Unicode: U+2666 U+FE0F
The diamond suit emoji (♦️) is one of the four suit symbols used in traditional playing card decks. It depicts a diamond shape, typically in red or black color. This emoji is often used to represent games, gambling, or anything related to playing cards.
I was dealt a great hand with two ♦️ aces!
The ♦️ is my lucky suit when playing poker.
Her engagement ring had a stunning ♦️ in the center.