U+29F1 "⧱" Error-Barred Black Diamond Unicode Character

U+29F1 "⧱" Error-Barred Black Diamond is a specialized typographical symbol included in the Miscellaneous Mathematical Symbols-B block, designed for use in technical notation and mathematical contexts. It visually represents a solid black diamond shape that has been marked with an error bar, typically rendered as a short horizontal line cutting through its body or extending from its side. This character is primarily used in fields such as physics, statistics, and engineering to indicate a measured value with an associated uncertainty or range of error in diagrams, charts, or equations. Its inclusion in Unicode provides a precise, text-based alternative to drawing such a symbol manually, ensuring consistent representation across different digital platforms and fonts.

General Properties

Code Point	U+29F1
Version Added	3.2
Name	Error-Barred Black Diamond
Block	Miscellaneous Mathematical Symbols-B
General Category	Math Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	⧱
HTML Hex Encoding	⧱
UTF-8 Encoding	0xE2 0xA7 0xB1
UTF-16 Encoding	0x29F1
UTF-32 Encoding	0x000029F1
C/C++/Java Escape	\u29f1

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Pattern Syntax	Yes
Math	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other