Help! Can Anyone help me identify what kind of stone this is?

I don't think that is a sapphire. Most probably it's a mineral called azurite (basically a copper carbonate).

Go to http://www.gemhut.come/bstsph.htm and see those. Yours sort of looks like a very um . . . um . . . how do I say this nicely. . . cheap stone? The good linde star sapphires have the star that moves as you move the ring. Yours looks like it's painted into the stone and stays in the same place no matter what angle the light hits it. Maybe that's why your husband doesn't think it is one.

It's called a star saphire. I have one just like it, only it's in a ring with 10 diamonds around it. I don't know anything about them, like if they are man made or what. . . but they are called Star Saphires. I don't have enough posts to put a picture here, but maybe I'll post it in a new thread so you can see mine to compare. Renae

Oh! Just remembered, when I bought mine, the label said, Linde Star Saphire. Now I am going to have to look it up on the internet, you have my curiosity aroused!