The History of Gem Trading in Sri Lanka: From Ancient Ceylon to the Modern Gem Industry

Every modern industry likes to claim deep roots, but few can back up the claim quite like Sri Lanka's gem trade. This is not a business that grew out of twentieth-century commerce. It is a trade with a documented history stretching back well over two thousand years, running in an almost unbroken line from ancient caravan routes to today's international gem shows.

Classical writers from Rome, Greece, and Persia all made mention of gems from the island then known as Taprobane. Sri Lankan gemstones travelled along early maritime trade networks that connected the island with ports across the Arabian Sea, eventually reaching markets as far away as Rome and, via overland routes, China.

Arab traders in particular played a major role in carrying Ceylon's gems westward during the medieval period, and Arab geographers left behind some of the earliest detailed written accounts describing the island's gem-bearing rivers and mining practices.

These early accounts are remarkable not just for their age but for their accuracy. Descriptions of rivers depositing gem crystals after seasonal rains, and of local mining techniques used to recover them, closely match methods that would still be recognisable to a gem miner working near Ratnapura today. Few industries can point to written descriptions of their core methods that remain this accurate after so many centuries.

By the time European powers began arriving in the Indian Ocean, Sri Lanka's gem reputation was already well established. The Portuguese, Dutch, and later British colonial administrations each took a direct interest in the island's gem-producing regions, recognising both their commercial value and their symbolic prestige.

Sri Lankan gemstones found their way into royal collections and crown jewels across Europe and Asia during this period, a pattern that would continue well into the modern era as sapphires and other coloured stones from the island became fixtures of high jewellery around the world.

Colonial-era administrators also left behind some of the first systematic written surveys of the island's gem-bearing districts, documents that, while written for revenue purposes, ended up preserving valuable early records of where and how mining was taking place, records historians still consult today when tracing the industry's development.

The twentieth century brought a shift toward formal regulation and structure. Sri Lanka established institutions such as the National Gem and Jewellery Authority to license mining operations, regulate the trade, and provide gemological certification, helping the country's gem exports compete confidently in an increasingly quality-conscious international market.

This period also saw Sri Lankan gem cutting and trading expertise become internationally recognised in its own right, with towns like Ratnapura and Beruwala's China Fort growing into established hubs that attracted buyers from across the globe. Local cutters, in particular, built a reputation for skill that made Sri Lanka a destination not just for sourcing rough stones but for having them expertly finished, a reputation that international buyers still actively seek out today.

Today's Sri Lankan gem industry sits at the intersection of that long history and modern global trade, exporting sapphires, rubies, and other coloured stones to jewellers and collectors worldwide while still relying on many of the same mining and trading communities that have worked the island's gravels for generations.

Few industries anywhere can trace such a direct, living line between ancient trade routes and modern commerce. Sri Lanka's gem trade is one of them, and its story is still very much unfolding, with each new generation of miners, cutters, and dealers adding their own chapter to a history that began long before anyone thought to write it down.