Moldy black truffles-are they edible?

Help! My friend brought me 3 Italian black truffles in brine (according to the label), packed by the producer in a glass jar. When I received them they weren't actually in liquid. I didn't realize they were supposed to be refrigerated. I left them in the cupboard for a few days and now I have discovered a gray, fuzzy mold growing on them with a bit of slime on the bottom of the jar. This is very sad. Can I rinse them off and still eat them? It would be such a shame to throw them away. Also, as a side question, I've never used truffles before-are they supposed to be hard? Or is this another sign that they're old and moldy and should be tossed in the compost? Thanks for your input.