In The Unicode Standard, Gujarati script implementation is discussed in  Chapter 12 South and Central Asia-I.

The Gujarati script was first encoded in The Unicode Standard version 1.0. The script is encoded in the following block:

BlocksCharacter RangeAdded in Unicode VersionUnicode Chart
Gujarati 0A80..0AFF 1.0  U0A80.pdf

Vedic Extensions may be used with the Gujarati script as well as many other Indic scripts.

Subsequent to version 1.0, the following characters have been added to the Gujarati script:

CharactersUnicode VersionDocumentation
0A8C 4.0  n2425.pdf/ L2/02-117
0AE1..0AE3 4.0  n2425.pdf/ L2/02-117
0AF0 6.1  n3764.pdf/ L2/09-330,  L2/09-331
0AF1 4.0  n2425.pdf/ L2/02-117
0AF9 8.0  WG2 N4473,  L2/13-143
0AFA..0AFF 10.0  L2/15-103

Documentation refers to  ISO Working Group and Unicode proposals

A number of proposals for its inclusion have been submitted to the Unicode Technical Committee and WG2:

2000-11-15 Unicode representation of Indian Scripts — M.N. Cooper ( L2/00-417)

2002-03-13 Error in Glyph for 0ABD Gujarati Sign Avagraha — V.S. Umamaheswaran ( WG2 N2417,  L2/02-111)

2002-03-21 Additional Characters for Indic Scripts — Rick McGowan ( WG2 N2425,  L2/02-117)

2004-03-09 Indic scripts collation grouping; CTT suggestion — Kent Karlsson ( WG2 2716.doc,  L2/04-109)

2004-06-30 Proposal on Clarification and Consolidation of the Function of ZERO WIDTH JOINER in Indic Scripts — Peter Constable ( L2/04-279)

2004-08-04 Response to Public Review Issue #37 — Antoine Leca ( L2/04-328)

2004-09-29 Encoding of Gujarati Signs Pao, Addho & Pono in Gujarati code block — Manoj Jain (Govt India) ( L2/04-358)

2004-11-07 Clarifications on L2/04-358, Gujarati fractions — Eric Muller ( L2/04-402)

2005-01-29 Comments on PRI 59: Script Specific Danda and Double Danda — Eric Muller ( L2/05-055)

2005-02-07 Issues in Representation of Indic Scripts in Unicode (Unicode Conference Presentation) — Om Vikas ( L2/05-063)

2006-06-17 Comments on Indic Block Descriptions — Peter Constable ( L2/06-225)

2007-05-15 Proposal to Encode North Indian Accounting Signs in Plane 1 of ISO/IEC 10646 — Anshuman Pandey ( WG2 N3312,  L2/07-139)

2007-07-31 Towards an Encoding for North Indic Number Forms in the UCS — Anshuman Pandey ( WG2 N3334,  L2/07-238)

2007-10-07 Proposal to Encode North Indic Number Forms in ISO/IEC 10646 — Anshuman Pandey ( WG2 N3367,  L2/07-354)

2007-10-14 Changes in L2/07-354 North Indic Number Forms (vs. L2/07-139) — Deborah Anderson ( L2/07-390)

2008-03-02 Criteria for the encoding of script-specific dandas — Unicode and US National Body ( WG2 N3457,  L2/08-118)

2009-09-27 Proposal to Encode An Abbreviation Sign for Gujarati — Anshuman Pandey ( WG2 N3764,  L2/09-330)

2009-10-07 Proposal to Deprecate GUJARATI RUPEE SIGN — Anshuman Pandey ( L2/09-331)

2010-02-05 Proposed additions to ISO/IEC 10646:2003 — INCITS/L2 ( WG2 N3810,  L2/10-068)

2012-07-31 Indic Scripts in Unicode — Eric Muller ( L2/12-289)

2013-04-15 Proposal to encode Gujarati Sign Triple Nukta — Vinodh Rajan ( L2/13-066)

2013-07-16 Proposal to encode Gujarati Letter ZHA — Vinodh Rajan ( WG2 N4473,  L2/13-143)

2013-11-07 Samples for usage of dandas in Gujarati, Telugu, Kannada, Malayalam, and Tamil — Roozbeh Pournader ( L2/13-224)

2014-02-05 A bag of suggested improvements to Unicode’s provisional Indic properties — Roozbeh Pournader, Behdad Esfahbod ( L2/14-065)

2014-05-02 Proposal to Encode Gujarati Signs for the Transliteration of Arabic in ISO/IEC 10646 — Anshuman Pandey ( WG2 N4574,  L2/14-131)

2014-05-08 Improvements requested for Unicode Indic properties (two text file appendices are included) — Roozbeh Pournader ( L2/14-126)

2015-03-30 Revised Proposal to Encode Gujarati Signs for the Transliteration of Arabic (replaces L2/14-131) — Anshuman Pandey ( L2/15-103)