All of our Minerals are 100% Genuine Specimens & come with a Certificate of Authenticity!
Corundum is a crystalline form of aluminium oxide with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally transparent materials, but can have different colours when impurities are present. Transparent specimens are used as gems.VARIOUS: The image is an example of the single mineral you will receive, it will not be the exact specimen in the photo. SELECTED: The mineral is a carefully chosen piece, with a photo that shows the actual specimen you will receive. PREMIER: A high quality display mineral, with a photo that shows the actual specimen you will receive.
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. To guarantee the specimen you receive will be representative by that in photo, we would always recommend the Actual as seen version of this item.