golden wedding

plural golden weddings

1. The golden anniversary of a wedding, the 50th anniversary of a marriage.

   ‘Perhaps you have no golden or silver wedding in England?’ ‘I confess I never heard of any thing of the kind,’ said Hamilton... ‘To be fifty years married and to have a golden wedding, is a sort of event in a family.’

   1850, Jemima von Tautphoeus, Initials, volume I, page 121

   1 more example

   ...in fact the paper, wooden and tin wedding presents are seldom anything but jokes. Crystal is the earliest that is likely to be taken seriously by the gift-bearers. Silver is always serious, and the golden wedding a quite sacred event.

   1922, Emily Post, chapter XXII, in Etiquette