Headstone emoji is an image of a gravestone. Headstones are used to commemorate the name and a message of a departed loved one, so use this emoji when talkng about them in good faith. Since this image is associated with death, you can use this as a warning to stay safe or someone may end up on the bad end of a situation. Send it with the 🙏 Folded Hands emoji to show that you are thinking of a dearly departed and wish the family involved good health. It can also be sent with the 💀 Skull emoji as a quick ⚠️ Warning for a friend that they may be involved in something that could end up hurting them. (Source: Emojis.wiki, Fair use)