This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. The word that U+264A forms with similar adjacent characters prevents a line break inside it.
The CLDR project calls this character “Gemini” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: horoscope, twins, zodiac.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: ♊︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
Gemini (♊︎) ( JEM-in-eye Greek: Δίδυμοι, romanized: Dídymoi, Latin for "twins") is the third astrological sign in the zodiac. Under the tropical zodiac, the sun transits this sign between about May 21 to June 21. Gemini is represented by the twins, Castor and Pollux, known as the Dioscuri in Greek mythology. It is known as a positive, mutable sign.
Representations
System
Representation (click value to copy)
Nº
9802
UTF-8
E2 99 8A
UTF-16
26 4A
UTF-32
00 00 26 4A
URL-Quoted
%E2%99%8A
HTML hex reference
♊
Wrong windows-1252 Mojibake
♊
Encoding: GB18030 (hex bytes)
81 37 A9 36
LATEX
\gemini
RFC 5137
\u'264A'
Bash and Zsh inside echo -e
\u264A
C and C++
\u264A
C#
\u264A
CSS
\00264A
Excel
=UNICHAR(9802)
Go
\u264A
JavaScript
\u264A
Modern JavaScript since ES6
\u{264a}
JSON
\u264A
Java
\u264A
Lua
\u{264A}
Matlab
char(9802)
Perl
"\x{264A}"
PHP
\u{264a}
PostgreSQL
U&'\264A'
PowerShell
`u{264A}
Python
\u264A
Ruby
\u{264a}
Rust
\u{264a}
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