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Collecting amber along the Baltic sea
Article
Historical Reading List: Baltic Amber

Amber has been found in various parts of the world, but the main historical source is the land that surrounds the Baltic Sea.

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Miners use shovels and sluicing equipment to search for diamonds near the Vaal River in South Africa.
Article
Historical Reading: The Diamond Fields of South Africa: Part 2 (1893-2014)

Within a few years of their discovery, the diamonds deposits of South Africa produced more diamonds than had come from India in two millennia.

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An early black and white photo that shows deep trenches dug into the ground in the search for diamonds. Ladders and ropes help the miners excavate and traverse the mine.
Article
Historical Reading: The Diamond Fields of South Africa: Part 1 (1868-1893)

The discovery of diamonds in South Africa in early 1867 marked the start of an historic period of diamond exploration.

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Article
Historical Reading: The California Gold Rush

The California gold rush − the largest gold rush in the history of the world − changed the social, economic, political and cultural history of the American West.

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Two blue sapphires side by side
Article
G&G Announces Most Valuable Article Awards

G&G announces the winners of the Dr Edward J. Gübelin Most Valuable Article Awards for 2019.

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Zircon
Article
Zircon History and Lore

Many people have heard of zircon but never seen it. This is mostly because of colourless zircon’s wide use as a diamond simulant in the early 1900s.

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Turquoise
Article
Turquoise History and Lore

Turquoise is one of the world’s most ancient gems. Archaeological excavations revealed that the rulers of ancient Egypt adorned themselves with turquoise jewellery, and Chinese artisans were carving it more than 3,000 years ago.

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Tourmaline
Article
Tourmaline History and Lore

Somewhere in Brazil in the 1500s, a Spanish conquistador washed the dirt from a green tourmaline crystal and confused the vibrant gem with emerald. His confusion lived on until scientists recognised tourmaline as a distinct mineral species in the 1800s.

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97.45-carat Imperial Topaz
Article
Topaz History and Lore

Most authorities agree that the name topaz comes from Topazios, the old Greek name for a small island in the Red Sea, now called Zabargad. (The island never produced topaz, but it was once a source of peridot, which was confused with topaz before the development of modern mineralogy.)

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Tanzanite
Article
Tanzanite History and Lore

Tanzanite is relatively new to the coloured stone galaxy. Almost overnight, tanzanite became popular with leading jewellery designers and other gem professionals, as well as with customers who had an eye for beautiful and unusual gems.

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