There is a lot of confusion between zircons, a mined mineral, and cubic zirconia, an inexpensive synthetic crystal. But jewelry designers know the difference.

Ben Patterson/Foundry This one’s pretty simple. Whenever you speak to Alexa, a blue light will appear with a light-blue segment that’s facing the direction in which she’s listening.

I tested two pairs of blue light glasses from Amazon and KITS, a made-in-Canada brand, to help with my eye strain.

Zircon grains shed new light on Mars’ watery past “When you find a zircon, it’s like finding a watch." ...

First Place: Ricardo Basta of E. Eichberg, Inc. with an 18k white gold and rhodium “Double the Love” ring featuring a 12.62-carat heart-shaped blue zircon accented with a 0.75-carat heart ...

Whatever the process responsible for the formation of light carbon observed in the Jack Hills zircon-hosted inclusions, they most likely predate their respective host grains.