Such a pretty little three stone diamond ring dating from the 1930s.  Each diamond is held in its own collar set mount and arranged in a row across the finger to cross over twist shoulders.  The shoulder have a scroll flourish to the diamonds and are topped with white metal testing as platinum leading to a yellow, D shaped cross section band.  No hallmark as was quite usual for the era, but stamped "18ct" and "Pt".  Finger size N1/2 with some resizing possible which we would carry out in our own onsite jewellery workshop.