This pretty ring is set with a .29 carat size Shelby Synthetic Ruby. The ring is made from solid 10kt white gold. We can make it in solid 10kt yellow gold as well. Also if you wish we can make this ring in 14kt gold. We chose to make this one in 10kt to make this ring a bit more affordable, yet still have a very high quality ring for a Valentine's gift. We can cut any of our gems into a heart shape if you'd like a different type of gem in a ring like this. We really make all of our Rubies. They have the same physical, chemical and visual properties as a natural Ruby. Guaranteed! They look better than any but the very best natural Ruby. It's impossible to tell the difference with just your eyes! If you use a microscope, you will see flaws in all but the very best natural rubies. You will see no flaws in ours!!