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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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Ruby
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Ruby Description

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire.

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Ruby Journey

Ruby is the most valuable variety of the corundum mineral species, which also includes sapphire

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Ruby
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Ruby History and Lore

The name ruby comes from the Latin word ruber, which means “red”. The glowing red of ruby suggested an inextinguishable flame burning in the stone...

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Ruby
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Ruby Quality Factors

Ruby can command the highest prices of any coloured gemstone. The per-carat prices of fine-quality rubies have been rising consistently, and frequently break auction records. Click here to learn about the factors that make ruby so desirable!

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Man stands in front of an audience giving a lecture – projection screen with image to his right.
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Not All That Glitters is Gold — Sometimes it is Mozambican Rubies

Learn about Mozambican rubies, including their mining history, characteristics and market demand.

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Two people walk past a Kay Jewelers storefront.
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Jewellery Sales Show Modest Rise; Higher End Soars

US Christmas jewellery sales increased slightly from 2018. Online buying surged, while foot traffic in retail stores slowed.

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A face-up view of a cushion cut diamond with blue color.
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Gems & Gemology’s 7 Most Unusual Encounters from 2019

Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.

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A large group of people outside on GIA’s Carlsbad, California  campus.
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Guardians of Trust: GIA’s Innovative Research, Instruments and Services

GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.

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The octopus head is a baroque Tahitian cultured pearl and its arms are made of black, yellow and white diamond (in a striped pattern) set in black-plated 18K gold.
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A Tropical Paradise of Ocean-Inspired Jewellery and Gemstones

Escape to a warm-water paradise in your mind with these jewels that formed in the sea, are inspired by marine life and evoke the ocean’s essence.

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