A diamond single stone ring

claw set round brilliant cut diamond, approximate diameter 4.9mm, estimated approximate weight 0.45ct, diamond cut shoulders, 'D' shaped shank, size K, unhallmarked, stamped '18ct', weight 2.1g

Condition Report
Overall condition: Fair to good
Diamond very slightly loose within the setting
Small hairline crack between the collet and mount
Heavy scratches/wear to mount