Byzantine Rose Gold Coin Necklace

Ancient bronze coin is set in 18k rose gold and is adorned with a single champagne diamond.
The pendant hangs from a handmade 18k rose gold link chain.
From The Byzantine Empire 685AD
The coin depicts an imperial figure standing wearinig a crown with a cross, holding in his right hand a long cross and in his left a globus crusiger.
The coin is the size of a US quarter.