Search for: [Characteristics of the object- texture/facture = "mass very clearly banded with dark\-yellow\-brown stripes \(10 YR 4\/4\) with a thickness of up to 3 mm \(from 0.5 to 3 mm\) with a band of indistinct greyish\-colored stripes \(approx. 10 YR 2\/1\), black nucleus \(10 YR 2\/1\), the bands become less pronounced towards the inner part of the nodule and the color becomes intermediate between 10 YR 4\/4 and 10 YR 4\/3\; it seems that the belts are arranged concentrically\; concretion seems to be large, indistinctly tabular"]