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Ruby
Article
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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A large group of people outside on GIA’s Carlsbad, California  campus.
Article
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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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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A pile of near-colorless HPHT synthetic melee
Article
Diamond Market Forecast: Declining Credit, Soft Prices and Lab-Grown Diamonds

Despite the generally strong year for jewellery retail, the diamond industry continues to face problems with credit, patchy demand and soft prices.

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A large pear shaped yellow diamond hangs from a black cord and lies against red material.
Article
US Holiday Season Opens Well, Despite Volatile Markets

The US holiday shopping season is looking positive, despite signs that an economic slowdown may be coming in 2019. Plus, more auction sales records.

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An oval shaped bicolor tanzanite has purple on each side with blue-green in the middle.
Article
December Blues: Birthstone Gifts that Will Delight

Looking for a gift for someone special? December’s birthstones offer a treat for every taste, style and personality – even if it’s not their birth month.

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A large piece of rough, left, with a portion cut out of it, and six cut and polished diamonds produced from the cut out piece of rough.
Article
Chipping Away at 1,109 ct Lesedi La Rona

Graff reveals the first polished diamonds produced from the Lesedi La Rona, one of the largest pieces of rough ever mined. Plus, other market news.

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A rectangle-shaped gold box, decorated with filigree, granulation and gems.
Article
Metalwork Takes a Bow: Techniques that Enhance Gemstone Jewellery

This collection of jewellery images illustrates how metalwork techniques showcase gemstone and jewellery designs.

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Three loops of diamond ribbons form a bow around a ruby framed by more diamonds.
Article
National Retail Federation Predicts a Cheery Holiday

The building blocks are in place for a strong 2018 U.S. holiday season. Plus, diamond market updates and upcoming auctions.

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The gems spell out “The 2000th Gem Stone Design.”
Article
Gemstone ‘Paintings’ Tell Story of a Master Craftsman, Gem and Jewellery Mentor

A jeweller who quietly built up a circle of inspiration and influence lives on in generations of GIA-educated jewellers and gemmologists.

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