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A sparkling blue marquise-cut gemstone.

Sotheby’s High Jewelry Geneva Auction Featuring Fancy Color Diamonds and No...

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Elegant ring with a large pear-shaped blue gemstone and diamond-studded band.

Christie’s Geneva Magnificent Jewels: Featuring the Mellon Blue and the Rainbow...

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Close-up images showing wood before and after treatment with improved texture.

Into the Stone: Photomicrography from E. Billie Hughes

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Intricate vintage pearl necklace with matching brooch.

Sotheby’s Royal & Noble Jewels: Old Cuts, Natural Pearls, Tiaras, and...

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A GIA-certified diamond with loose diamonds beside it.

Holiday 24-Hour Diamond Services at GIA’s Gem Lab

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Nephrite Jade: An update on Basics, Research and Markets 

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Into the Stone: Photomicrography from E. Billie Hughes

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A red and silver decorative snake sculpture on a black background.

Invisible-Set Genius: Inside the Craft of Oscar Heyman

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Elegant bracelet with red and green gemstones set in brown material.

AGTA Announces the 2025 Spectrum & Cutting Edge Award WINNERS! …...

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Two people standing in front of large classical columns outside a building.

AGTA Continues the Fight for Zero Tariffs: Thailand and Vietnam Look...

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Colorful concentric rings resembling a topographic or heat map.

Scoping It Out: Photomicrography from Melissa Scarani

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GIA’s “NextGem” Reminder — In Time for the Holidays: Short, On-Demand...

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