The clean, pure beauty of platinum combined with the stunning sparkle of marquise diamonds makes a truly special engagement ring. Our selection of marquise platinum engagement rings is nothing short of breathtaking. Choose a single diamond for a bold and striking statement or opt for a halo and stream of side stones for maximum glamour. The platinum setting provides an elegant backdrop for your marquise diamond to stand out as a symbol of eternal love and romance. Find your perfect engagement ring today with our collection of gorgeous platinum marquise diamonds.