Three Stone

 
Yellow gold oval engagement ring with broad split shoulders, one diamond-set and one polished, front view.
 
White gold engagement ring with an emerald-cut center stone and graduated emerald-cut diamond shoulders.
 
White gold three-stone engagement ring with a large round rose-cut diamond and two smaller rose-cut diamonds.
 
Three-stone platinum ring with a radiant-cut yellow diamond in yellow gold prongs and trapezoid diamond side stones.