Tempskya (Knowltoni), is a rare silicified fossil fern from the Cretacious age found in Baker Co. Oregon. Old stock material. Color is mainly brownish-yellow with some containing brownish-red. Excellent replacement characteristics. These will polish beautifully. Five one inch squares is considered one order. The image shown is a polished slab, and approximately 5-6 inches across, so there would be 5 or 6 orders in a similar size rough, (non-polished) slab.