Most Helpful Guy
It is supposed to be up to him to decide what type of ring to buy you. After all it is a gift in contemplation of marriage
Anyway, what about a man made diamond? Some places call them “Simulated Diamond”. They are grown in a lab instead of dug out of the ground. Even though you don’t like the “look” of diamond alternatives, you cannot tell the difference looking at them. Not even a jeweler looking at it can tell looking at them. It takes laboratory testing to know which is which.
They cost significantly less, and are generally indistinguishable from natural diamonds.
Once place to look is here:
Most Helpful Girl
There are many different types of stones and gems available. Spinel, peridot and citrine are my favorites. You should look up the different gems that are available.