NWES has defaulted on the loan from King's Lynn and West Norfolk Borough Council.
The £250m redevelopment of Norwich's Anglia Square had attracted more than 700 objections.
The gold-plated ring, unearthed by a metal detectorist, is about 3,000 years old.
High-profile nature lovers including broadcaster Chris Packham have criticised developers for promoting the practice.
The challenges of creating miniature couture for a very special lady.
Drewe Broughton struggled with depression and addiction as a player - BBC Look East hears how he is now helping Premier League players.
Wrexham sign Anthony Spyrou on loan from Norwich until the end of the season.
Great Yarmouth Mercury
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