That is because not all diamond cuts and shapes will look perfect when set in yellow or rose gold. The cushion and radiant cut diamonds are best ones that complement fancy colored metal bands. Radiant and cushion cut diamonds have similar faceting patterns and shapes, and they reflect the color and light from yellow and rose gold attractively. To keep its light performance, it is best to select a diamond with a tint of color that contrasts with that of the metal band. For instance, the yellow colored gemstone set in the yellow gold is far from being the perfect pairing on an engagement ring. Instead of that, choose a green or blue diamond, as that will look stunning in a yellow gold. The rose gold is chicer when it comes to color than yellow gold. Hence, it is easier to select a naturally colored diamond that suits the metal band. Pink, green, blue, and purple diamonds all look stunning when set in a ring band. Therefore, you can have more options when it comes to choosing pink gold diamond engagement rings.