According to the Crown Chronicles:
… orb and sceptre are used at the coronation of each new Sovereign…. But why are they used and what do they mean?
The Sovereign’s Orb…is a symbol of Godly power. A cross above a globe, It represents ‘Christ’s dominion over the world’, as the Monarch is God’s representative on Earth.
It is presented to the Sovereign [thus]: “Receive this orb set under the cross, and remember that the whole world is subject to the Power and Empire of Christ our Redeemer.”
The Sovereign’s sceptre…represent[s] the temporal power of The King or Queen, and is associated with good governance.
To read the entire article in the Crown Chronicles, please click here.