What is the rarest emoji?

Rarity shifts year-to-year as usage evolves, but according to Unicode's own frequency data, consistently low-use emojis include 🪯 (Khanda), 🫟 (Splatter), 🏤 (European Post Office), and 🛞 (Wheel). If you use any of those, you're probably in the top 1% of users for them.