What 🞙 means
By itself, it has no agreed reading.
A 2012 Unicode proposal maps 🞙 to Wingdings' “black diamond 4,” fourth in six sizes. Wingdings, designed in 1990 and 1991 and released in 1992, offered geometric options for bullets and ornaments. Unicode extended the set to complement existing shapes and make the symbols searchable as text.
In math, diamond size can distinguish a variable from an operator in some notations; fonts control its exact proportions.
What it means when someone sends it to you
2 readingsSent alone
A filled diamond, with no agreed message.
Inside a math expression
Its size may distinguish roles, such as variable or operator.
Don't confuse it with
1Questions people ask
1Why does 🞙 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type 🞙
Windows (Word)
Alt+XType 1F799, then Alt+X to get 🞙.
Windows
Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).
macOS
Control+Command+SpaceOpen the character viewer and search “black medium small diamond”.
Linux
Ctrl+Shift+UType 1f799, then Enter or Space.
HTML
🞙CSS
\1F799Codes and encoding1 code points
HTML decimal
🞙
HTML hex
🞙
CSS content
content: "\1F799";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9F%9E%99
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.