3,000 Years of Fascination
From the riverbeds of ancient India to the fingers of royalty — the remarkable human story of diamond.
Through the Ages
For most of human history, diamonds came from a single source: the alluvial riverbeds of the Indian subcontinent. For over 2,000 years India held a world monopoly, supplying stones to the courts of emperors and European monarchs alike. That changed dramatically in the 18th century — and again in the 19th — as new deposits emerged and transformed the diamond trade forever.
The earliest written reference to diamonds appears in the Sanskrit text Arthashastra. Alluvial diamonds are mined in the Golconda region (modern Andhra Pradesh), prized as talismans and traded across Asia.
During his Indian campaigns, Alexander encounters diamonds. Greek and Roman writers begin describing "adamas" — the unconquerable — as a mysterious stone of divine origin. Pliny the Elder later writes of it in his Natural History.
Guild records in Nuremberg document the first diamond polishers in Europe. Craftsmen discover they can grind diamond with diamond dust, opening the era of faceted gemstones — and transforming rough pebbles into dazzling jewels.
Archduke Maximilian of Austria gives Mary of Burgundy a gold ring set with thin flat diamonds in the shape of an "M". The tradition of the diamond engagement ring is born — though it would take centuries to become universal.
Significant diamond deposits are discovered in Minas Gerais, Brazil, ending India's two-millennium monopoly. Brazil dominates world supply for over a century, flooding markets and reshaping trade routes.
A 21-carat stone found near the Orange River in South Africa triggers one of history's great mineral rushes. Within a decade, Kimberley becomes the diamond capital of the world and Cecil Rhodes founds De Beers Consolidated Mines.
De Beers launches what Ad Age will later call the greatest advertising slogan of the 20th century. Sales of diamond engagement rings in the United States double within three years. The diamond-as-romance equation is cemented in culture.
General Electric scientists produce the first reproducible synthetic diamonds using high-pressure, high-temperature (HPHT) technology. Industrial applications follow immediately; gem-quality synthetics arrive in the market decades later.
Legendary Stones
Certain diamonds have become legends — some for their impossible size, some for the wars they sparked, some for the curses attached to their names. Here are a handful that changed history.
| Name | Carat Weight | Colour | Origin | Claim to Fame |
|---|---|---|---|---|
| Cullinan | 3,106 ct (rough) | Colourless | South Africa, 1905 | Largest gem-quality rough diamond ever found. Cut into 9 major stones, two of which are set in the British Crown Jewels. |
| Hope Diamond | 45.52 ct | Deep Blue | India (Golconda), c. 1666 | Legendary blue Type IIb diamond. Said to carry a curse; now on display at the Smithsonian Institution. |
| Koh-i-Noor | 105.6 ct | Colourless | India, c. 1300 | "Mountain of Light." Passed through Mughal, Sikh, and Afghan rulers before entering the British Crown Jewels in 1849. |
| Pink Star | 59.60 ct | Vivid Pink | South Africa, 1999 | Largest internally flawless fancy vivid pink diamond ever graded by GIA. Sold at auction for $71.2 million in 2017. |
| Regent | 140.64 ct | Colourless | India (Golconda), 1698 | Purchased by the French Regent in 1717; worn by Napoleon in the hilt of his sword. Now in the Louvre. |
| Orlov | 189.62 ct | Bluish-Green Tint | India, c. 1650 | Once the eye of a Hindu idol; acquired by Count Grigory Orlov as a gift for Catherine the Great. Set in the Imperial Sceptre of Russia. |
Today
Chemical Vapour Deposition (CVD) now produces gem-quality diamonds atom by atom in weeks. Physically and chemically identical to mined stones, they have disrupted the market and sparked debate about authenticity, value, and sustainability.
Around 80% of diamonds mined today go not into jewellery but into cutting, drilling, and grinding tools. Diamond-tipped drill bits extract oil; diamond saws cut concrete; diamond wire draws the finest metal filaments.
Diamond's nitrogen-vacancy (NV) centre — a single nitrogen atom beside a vacancy in the lattice — is one of the most promising qubit systems in quantum computing research, operable at room temperature unlike most competing approaches.
"Better a diamond with a flaw than a pebble without."— Confucius