Surat is one of the world’s most active diamond manufacturing centers, and that matters when buying rough. The city is not just a trading stop. It is where rough is evaluated, planned, cut, polished, sorted, and exported at serious scale. For trade buyers, that creates opportunity. It also creates risk. The same market that offers competitive access to CVD and HPHT rough also demands careful supplier selection, technical checks, clear documentation, and disciplined buying terms. This guide...

Close-up comparison of a lab-grown diamond and a natural diamond under jeweler's loupe lighting

Surat cuts and polishes the overwhelming majority of the world's diamonds — natural and lab-grown alike. For a retailer, importer, or private label brand sourcing lab-grown diamonds for the first time, that concentration is both an opportunity and a problem: hundreds of companies in the city describe themselves as a "manufacturer" or "supplier," and from outside India it's genuinely hard to tell which of them actually grow, cut, and polish stones under their own roof, and which are reselling...