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Detail of pendant elements heart and palmette shows twisted wire details (probably cast) and granulation soldered on.
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A New Life for Revival Jewellery Styles: Archaeological, Renaissance and Egyptian

Revival jewellery is inspired by the past – and wearing it connects us to the rich history of the beginning of civilisation.

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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.
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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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A group of rough sapphires encircle cut sapphires.
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Montana Yogo Sapphires’ Unique Gemmology

A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.

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A model holds a large cut-corner square diamond with three fingers.
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De Beers Ups Supply; US Federal Trade Commission Warns About ‘Eco’ Claims

DeBeers responds to fluctuations, and the FTC issues warnings on laboratory-grown diamonds. Plus: 302.37 ct Graff Lesedi La Rona is revealed.

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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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G. Robert Crowningshield (1919–2006)

A look back at the groundbreaking research of G. Robert Crowningshield

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Dona Dirlam
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Dona Dirlam

A childhood love of gems and minerals led to the transformation of GIA's library and to a lasting reputation of excellence.

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Suite containing over 36 carats of Yogo sapphire
Gemmological Characterisation of Sapphires from Yogo Gulch, Montana

A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.

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Horn shaped jewel pendant featuring emeralds, rubies, diamonds and pearls, and shows engravings in Arabic.
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Centuries of Opulence: Jewels of India

Learn about the journey of gemstones used to create the fabulous Indian jewellery featured in this special exhibition at GIA in Carlsbad.

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Timeline showing the use of garnets in different eras from 300 BCE to 700 CE
An Early Byzantine Engraved Almandine from the Garibpet Deposit, Telangana State, India: Evidence for Garnet Trade Along the Ancient Maritime Silk Road

Analyses the chemical composition and inclusion characteristics of this ancient artefact.

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