India uses a lot of gold for 'personal' use; that's not the same as 'industrial' use. There are a lot of women there wearing gold. Gold is still a major measure of wealth, class and significance in many cultures. If you mean 'largest' in the sense of biggest land mass? That's not the same as most in metric pounds for industral use, nor for adornment use, nor technological use. In the United States of America and just about every place that's got a CPU or other chip to plug in, gold is an important metal. But what country is the largest gold user, that question cant be answered in my opinion.
USA
england
india
europe
India
The largest producer of gold is China, while the largest producer of diamonds is Russia.
The largest gold producing country in the world is Soth Africa. It is also the largest diamond producing country in the world. It mines more than 100 kg of gold per day. China is largest gold producing country - 403t in 2012.
South Africa
South Africa
South Africa
China has surpassed South Africa in largest production of gold.
Brazil is a major producer of gold as well as Suriname and Guyana