All of our Minerals & Crystals are 100% Genuine Specimens & come with a Certificate of Authenticity
At 3 billion years old Lewisian Gneiss is one of the oldest rocks in the world and the oldest in the UK. This Gneiss is collected from the Isles of Lewis, Harris, Skye and Mull, and also found on mainland North West Scotland.
The Lewisian Gneiss complex is a mixture of many minerals including Quartz, Feldspar and Epidote with a rich history of volcanic and metamorphic events.SIMILAR TO SEEN: The image shows an example of the single specimen you will receive. This will be picked from our stock box graded and with a size within the minimum and maximum size range indicated. It will not be the exact specimen in the photo, the colours, shape, size and style may vary as with any natural item.