The circular issued by the CBDT specifies that a married woman can keep up to 500 grams of gold jewelry; a single woman can store up to 250 grams and a male member of the family can keep up to 100 grams of gold ornaments and jewelry. The large Good Delivery bar is worth more than the standard gold bar held and traded internationally by central banks and bullion dealers, with a nominal weight of 400 ounces (12.4 kg; 438.9 oz). However, its precise gold content is allowed to vary between 350 ozt (10.9 kg; 384.0 oz) and 430 ozt (13.4 kg; 471.8 oz). The minimum purity required is 99.5% gold.
These ingots must be stored in recognized and safe gold bullion vaults to maintain their quality status of Good Delivery. The recorded origin of this bar guarantees integrity and maximum resale value. Are there any limits to the amount of gold I can own? No, there are no restrictions on private ownership of gold in the United States. You're only limited by your budget and your common sense.
The 20 grams are similar enough in size and weight to 1 Troy ounce that someone without much experience can easily confuse it with different bars. That's why it's important to always check the label to make sure you know what bar size it is.