Crafted in 14K white gold, this Croft & Stern original design features 2=3.35ctw prong-set round Tanzanian “spice” colored zircons accented by 2=0.04ctw prong-set earth-mined round brilliant cut diamonds. These earrings are secured with posts and friction backs and finished in a bright polish.
Collector’s Note: Zircon holds a distinction no other gemstone can claim—it is the oldest known mineral on Earth. Individual zircon crystals discovered in Western Australia have been dated to 4.4 billion years, formed when the planet’s crust was still cooling. Nothing else you can wear on your body predates the continents.
Zircon is scientifically significant because of its chemistry. When zircon forms, it naturally incorporates tiny amounts of uranium, but excludes lead. Over time, the uranium slowly decays into lead at a predictable rate. By measuring that uranium-to-lead ratio, scientists can determine the age of the zircon crystal with remarkable accuracy.
This dating method—uranium-lead (U-Pb) dating—is one of the most reliable ways geologists determine the age of rocks and major events in Earth’s history.
So while zircon dazzles with brilliant light dispersion and rich natural color, its real power is this:
You’re not just wearing a gemstone.
You’re wearing a piece of Earth’s timeline—a mineral used to measure the age of the planet itself.
Designed by Kelly Sternau
Crafted by Croft & Stern Jewelry Designs
Maple Grove, MN
Crafted in 14K white gold, this Croft & Stern original design features 2=3.35ctw prong-set round Tanzanian “spice” colored zircons accented by 2=0.04ctw prong-set earth-mined round brilliant cut diamonds. These earrings are secured with posts and friction backs and finished in a bright polish.
Collector’s Note: Zircon holds a distinction no other gemstone can claim—it is the oldest known mineral on Earth. Individual zircon crystals discovered in Western Australia have been dated to 4.4 billion years, formed when the planet’s crust was still cooling. Nothing else you can wear on your body predates the continents.
Zircon is scientifically significant because of its chemistry. When zircon forms, it naturally incorporates tiny amounts of uranium, but excludes lead. Over time, the uranium slowly decays into lead at a predictable rate. By measuring that uranium-to-lead ratio, scientists can determine the age of the zircon crystal with remarkable accuracy.
This dating method—uranium-lead (U-Pb) dating—is one of the most reliable ways geologists determine the age of rocks and major events in Earth’s history.
So while zircon dazzles with brilliant light dispersion and rich natural color, its real power is this:
You’re not just wearing a gemstone.
You’re wearing a piece of Earth’s timeline—a mineral used to measure the age of the planet itself.
Designed by Kelly Sternau
Crafted by Croft & Stern Jewelry Designs
Maple Grove, MN
