This character is a Other Letter and is mainly used in the Han script. The Unihan Database defines it as gold; metals in general; money; Kangxi radical 167. Its Pīnyīn pronunciation is jīn.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it is written from left to right. When changing direction it is not mirrored. U+91D1 offers a line break opportunity at its position, except in some numeric contexts. The glyph can be confused with 3 other glyphs.
The Wikipedia has the following information about this codepoint:
Radical 167 or radical gold (金部) meaning "gold" or "metal" is one of the 9 Kangxi radicals (214 radicals in total) composed of 8 strokes. It also represents the Chinese family name, Jin, which is No. 29[1] of the Hundred Family Surnames.
In the Kangxi Dictionary, there are 806 characters (out of 49,030) to be found under this radical.
In the Chinese Wuxing ("Five Phases"), 金 represents the element Metal.
金 is also the 176th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China, with 钅 (Simp.) and 釒 (Trad.) listed as its associated indexing components.