In 2018, to celebrate the Sapphire Coronation of Her Majesty Queen Elizabeth II, the Royal Mint released a Limited Issue Sapphire Coronation £500 Five Hundred Pound Silver Proof Kilo Coin struck in solid fine .999 Silver weighing One Kilo of pure Silver.
The reverse designed by Dominique Evans depicts a seated portrait of the Queen with Orb, Sceptre and St Edward’s Crown while the obverse design features
the Fifth Portrait of Queen Elizabeth II designed by Jody Clark.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.