I am trying to create a teardrop shaped Jewel such as this one.
The approach I wanted to take is the create a cross section of the jewel and model it from a circle as seen here:
and then solidifying it in some way which would make the center have the most height and the keeping the rim as edges. Think of it as solidifying with a factor of 1 in the center (or the point where I choose) and that factor gradually decreases until it reaches 0 at the outer edges where they are not given any thickness.
I'm not ever sure that this would be the right approach, but it seems to be the easiest if I am able to find a modifier that created my desired effect.