The only natural gold isotope is 197Au. All others are radioactive ranging from 185Au to 203Au and are manmade. They dont make for good lasting investments since their half life goes from 1.35 sec to 185 days.
The only natural gold isotope is 197Au. All others are radioactive ranging from 185Au to 203Au and are manmade. They dont make for good lasting investments since their half life goes from 1.35 sec to 185 days.