Yo Q care to comment on the reason they use gold?
Ancient Indians beliefs about gold was that it protected one from bad energies.
>Gold is a metal that imbibes sattvik and Chaitanya enriched waves and emits them into the atmosphere with equal speed. Gold also leads in preserving Chaitanya enriched waves in the form of Tej-tattva (Absolute Fire Principle). Hence, an individual who wears gold ornaments receives the benefit of sattvikta and Chaitanya.
>Even if attacked by more powerful negative energies because of wearing gold ornaments, the ensuing spiritual practice ensures protection. Whatever be the level of Chaitanya the gold ornaments are endowed with, there also exist negative energies in the atmosphere that resist this Chaitanya. As an effect of the subtle battle between negative energies and gold, an average individual can get distressed to the extent of 10 percent; but if the individual is performing spiritual practice, it develops the ability to sustain the effects of the subtle battle. Depending on its bhav (Spiritual emotion), the individual can use the ornaments like a weapon, and can increase the self-protection capacity up to 30 percent.