For your sake I hope it is Gold, but I personally do not think it is. Gold will be soft like you said and malible. Thats why thousands of years of being pushed around it becomes molded and rounded over. I do not know what you have being so sharp and jagged thats strange. They almost look like shavings, maybe you scaped them off a biggin ! Anyway thats my 2 cents worth. LOL Good luck