Blue Ridge Yellow Ocher is a semi-transparent golden yellow, very fine grained and has a buttery consistency. Our yellow ocher is a single pigment color made of natural earths from ocher deposits in the Blue Ridge mountains of Virginia. Iron oxide hydroxide is the principle coloring agent in yellow ochers. This color is based on the natural mineral goethite associated with varying proportions of others mineral such as clay, chalk and quartz. The iron oxide in yellow ochers differ from other ochers in that it contains water. In other words, the iron to which they owe their color is iron oxide hydroxide.