The oldest rock on planet earth is the Acasta River Gneiss

by bilbo on January 14, 2015

Without getting into a lot of complex geology and mineralogy, the planet Earth is currently thought to be approximately 4.6 Billion years old. An early crust formed and a few microscopic fragments dating as far back as 4.1 billion years have been found but never an outcropping 4.03 billion years ago, part of the crust was metamorphosed into this Tonalite Gneiss, making it the oldest known rock in the world. – See more at:

I have the pleasure of working with this notable stone. The thought that this was some of the first rock ever formed on planet earth as I cut and polish it for my exclusive jewelry settings makes me feel quite privileged to know the owner of the Acasta River claim Mark Brown.











For more info on getting a piece of this ancient stone set in Silver or Gold please email me at


Please visit Mark Brown’s website at

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