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GIA Website Privacy Notice

GIA Website Privacy Notice

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GIA Laboratory Client Agreement

To submit any item to GIA for analysis and grading services, you will need to submit a completed Client Agreement with your first shipment.

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Red spinel, Burma ruby
Article
A Case of Mistaken Identity?

Don’t judge a gem by colour alone. Many clues can help you identify gems of similar colours.

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Venetian mask cloud inclusion
Article
Diamonds Under the Scope

Peer through a microscope and discover another world of gems. Inclusions reveal the gem’s journey from deep within the earth to its surface.

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Three smaller cameos show the progression of craving a cameo from rough shell. They sit in sand alongside a shell with a fully carved cameo on it.
Article
Cameos: Timeless, Miniature Carvings for Jewellery Lovers

The rich history and lore of cameos make them a fascinating avenue into the world of collecting for history, mythology and jewellery buffs.

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Detail of pendant elements heart and palmette shows twisted wire details (probably cast) and granulation soldered on.
Article
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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A heart-shaped piece of pink drusy hangs from a gold chain.
Article
Dreamy Drusy: Minute Crystals Shimmer in Dramatic Designs

Drusy jewellery has surged in popularity in recent years. Celebrities wear it on the red carpet and designers clamour for it at gem shows.

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Bursts of yellow and purple radiate throughout this round-cut ametrine.
Article
Colourblocking: The Art and Fashion of Multicoloured Gemstones

The fashion trend of colourblocking can be found in the artistic combinations of colour in multicoloured gemstones known for their colour zoning or banding.

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Financial Aid Forms

Financial Aid Forms

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Rough diamond, yellow in colour
Article
Diamond Research Gives Clues to the Formation of the Continents

Mineral inclusions trapped in diamonds reveal the continents’ construction – and help GIA researchers date diamonds.

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