David Tennant - David Tennant Touched By Richard Ii Gift
Richardson, who won acclaim for his portrayal of the doomed King of England in the 1973 adaptation of William Shakespeare's tragedy, wore an amber ring during his time on stage.
Tennant is tackling the same role, and has been gifted the jewellery to wear during his performances after Richardson's widow Maroussia found it at home.
The former Doctor Who star tells the Bbc, "It's lovely to have this as a kind of talisman. I immediately wanted to wear it in the performance. I wanted to have a bit of Ian Richardson on stage with me, giving me a hand.
"It means an enormous amount to me. I was terribly moved. It felt like a blessing and encouragement from history."
Tennant is performing in the play at The Royal Shakespeare Theatre in Stratford-upon-Avon, England until 16 November (13), before it transfers to London's Barbican on 9 December (13).
Richard passed away in 2007 aged 72.