“They are one of the best advertising,” says the Mayfair-based designer, whose work has been embraced by rappers such as Nines, Skrapz and their fellow Ice City Boyz. Mentioned in “Same Way”, a track from Nines’s Crop Circle album, Chiefer saw a bounce in consideration after the collective started sporting his bussdown diamond pendants. “Those went viral because no one was doing that type of customized work,” says Chiefer. Giva has secured Rs 270 crore in Series B funding, led by Premji Invest. With a doubled valuation since its earlier funding, Giva plans to broaden into new segments, focusing on…