Researchers have developed an environmentally friendly method for recycling and purifying metals. Using gold earrings from a pawnshop in Gothenburg and biodiesel from the nearest filling station, the ...

Gold prices have quadrupled in one decade, attracting investors amid economic uncertainty and geopolitical tensions.

With gold prices rising, consumers are increasingly exchanging old jewellery for hallmarked pieces to ensure purity and better resale value. Mandatory hallmarking in India, regulated by BIS, certifies ...

Gold and Silver Purity Check: Today, gold and silver jewellery in India come with standardised purity marks governed by BIS ...

Gold is a soft metal with a characteristic yellow color. It is also the most malleable and ductile of all elements. Except for aqua regia", HNO 3 /HCl, gold is not affected by water, air, acids, and ...