Blue Nile’s Valentine’s Day sale runs through February 14. You can find everything from diamonds to sapphires, emeralds and ...

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“Her jewelry and carvings are a feast for the eyes.” In 2013, Ms. Sarna won the association’s Carving Award for L’Heure Bleu, an abstract carving of a 703-carat blue-violet tanzanite set ...

Overall, only 2.1% of the pine trees' rings and 1.3% of the juniper shrubs' rings were blue; the cells which hadn't lignified properly were mainly found at the end of growth rings, in latewood ...

Blue rings found in the stems of trees and bushes in Norway point to a historic cold period in the late 1800s, but the exact cause of this climatic event remains unclear, scientists say.

Taken from a tree in Norway, this stained tree sample shows a blue ring from 1902. (Credit: Pawel Matulewski and Liliana Siekacz) Human skin isn't the only thing that can change color after facing the ...

Scientists studying pine trees and juniper shrubs in northern Scandinavia are revealing the weather of the past by looking at tree rings — which can tell us far more than just the trees’ age. ‘Blue’ ...

Scientists have discovered that peculiar "blue rings" in wood samples reveal the aftermath of chilling volcanic eruptions that disrupted growing seasons over a century ago. When summers turn ...

Because you know what could ruin a trip to Greece? Diving into clear blue water to discover that your diamond ring slid off and swam away. If you’re taking a trip and want to limit the stress of ...