Kempf’s collection of engagement rings, diamond anniversary, wedding bands, and three stone rings representing "Yesterday, Today and Tomorrow" are designed in 14K and 18K white and yellow gold or platinum. We have a large selection of beautiful loose diamonds to set in a design of your choosing. You can be assured of the highest ethical standards when making such an important purchase as this. Rubies, emeralds, sapphires, tanzanite and tourmaline are just a few of the colored gemstone rings created with attention to detail and design.