OKHRA ERYTHRAEA
This is an okhra (ochre for English) extra rich in natural iron oxide ( haematite) along with other minerals, as gypsum and traces of calcite. It gives a warm erythron, an orange-red hue, close to terracotta or baked earth.
Stability to light 7 (scale 1/8)
Density 0,80gr/m3
For fresco, tempera, oil, encaustic
