After finding a 4.4 billion-year-old zircon, scientists knew that it was the oldest mineral in the world. The zircon is gifted with both, intense brilliance and strong colors. Due to the gemstones diverse colors, it is easy to combine it with our design and colors. A good example are the X-Factor earrings (as seen below). To unfold their full potential, the Zircons in our collection are always facetted and eye-clean. Fun fact: Due to its high density zircons weigh more than most gems of like size.

Colors: Champagne, brown, yellow, rose, blue

Where to dig for it: Cambodia, Tanzania and Sri Lanka

Mohs hardness: 7-7.5

The Mohs hardness scale

The Mohs hardness scale describes a scale from 1 to 10, which indicates the relative hardness of a mineral. Diamond is the hardest substance in the world and is therefore rated with the highest hardness grade of 10. To further illustrate the Moh's hardness it helps to imagine that a moonstone
(hardness 6) is about as hard as the blade of a kitchen knife. A fingernail would only measure a grade of 2-2.5 on the scale.

At Bron, the hardness plays a minor role. Our overriding selection criteria are color and the ‘liveliness’ of a gemstone.