Are you trying to square the circle? It's the hardest thing to do with the simplest shapes, so good luck. This silver ring bearing a natural round garnet is also available with Black Rhodium and 18K Gold plating.
Silver 925
Stones Garnet
Plating White Rhodium, Gold 18K
Width 24 mm
Band wide 6 mm
Length 16 mm
Weight 10.42 g