The Gemological Institute of America (GIA) has unveiled a curated collection of red, white and blue gemstones and pearls to commemorate the 250th anniversary of the United States.
The collection highlights the diversity of gemstones and demonstrates how crystal structure, trace elements and craftsmanship influence colour and appearance.
Rare red gemstones
The red segment features ruby, red spinel, rhodochrosite and red beryl. Among the highlights is a carved ruby depicting Abraham Lincoln, showcasing the gemstone’s potential for artistic and sculptural applications.
Red beryl, mined commercially only from Utah’s Ruby Violet Mine, is considered one of the world’s rarest gemstone varieties.
White and colourless gems
The white and colourless category includes zircon, beryllonite, apophyllite and pearls. According to GIA, colourless zircon is valued for its brilliance and fire.
Beryllonite, found in Maine, offers a uniquely American connection. Meanwhile, natural pearls demonstrate the relationship between biology and gemology, as they are formed through biomineralisation within mollusks.
Blue stones complete collection
The blue section comprises blue spinel, dumortierite, euclase and benitoite. Discovered in California in 1907, benitoite was designated the state’s official gemstone in 1985.
The gemstone is renowned for its vivid blue colour and exceptional sparkle. However, scientists have yet to fully explain the source of its distinctive hue.
Expert view
“Red, white and blue are instantly recognisable, but in gems and pearls, they are far from uniform,” said GIA Senior Manager, Coloured Stones Identification, Nathan Renfro.
“This mix highlights how those colours show up across different materials, offering a fresh perspective on a familiar palette,” he added.