Hi, in my local jeweler there is a peridot heart pendant that I quite like. I've never really bought peridot but I thought this one might look nice with a black sweater. It's a nice heart-shape, about 8mm across, and is a lovely bright green. It's set in sterling silver and costs $135. Is that an OK price for a peridot heart, do you think? Or is it overpriced? Thanks for your help!