A Precious Metals IRA can own four types of precious metals: gold, silver, platinum, and palladium. IRA gold is limited to 1 ounce, ½ ounce, ¼ ounce, and 1/10 ounce Gold American Eagles (Uncirculated or Proof) or other gold products (coins or bars) with a minimum purity of .995%. To qualify for an IRA, silver must be at least .999% pure; and both platinum and palladium must be at least .9995% pure.