Lots of diamonds in my dream?

Dreams are a fragment of your imagination, experiences, fears or desires and usually don't mean anything. There are all sorts of claims and conjectures about what dreams mean, mostly based on wish-fulfillment or fears. It's intriguing to think about because the events of our recent lives seem to play out in our dreams in odd ways, but the "theories" of interpretation are merely someone's opinion and not based on anything substantial or objective or scientific. Your particular dream is a reflection of your fears and desires and probably doesn't mean anything substantial.