Hi guys...would this be a pure metal platinum nugget? the tests that i have already performed are that it is not magnetic i grinded it their were no sparks i acid tested it for all basic metals and silver i acid tested it with a platinum solution and there was no reaction whatsoever...what do you guys reckon? i do often find small flakes of platinum gold and silver in the same area...it weighs 2 troy ounces and 14 grams...