{"product_id":"iron-oxide-red-250g","title":"Iron Oxide Red - 250g","description":"\u003cp\u003e\u003cspan\u003eIron Oxide Red is also known as Ferric Oxide, RIO, Hematite. In oxidation firing iron is very refractory, so much so that it is impossible, even in a highly melted frit, to produce a metallic glaze. It is an important source for tan, red-brown, and brown colours in glazes and bodies. Iron red colours, for example, are dependent on the crystallization of iron in a fluid glaze matrix and require large amounts of iron being present. The red colour of terra cotta bodies comes from iron, typically around 5% or more, and depends of the body being porous. As these bodies are fired to higher temperatures the colour shifts to a deeper red and finally brown.\u003c\/span\u003e\u003c\/p\u003e","brand":"Bot Pots - Botany Pottery Studio L.t.d","offers":[{"title":"Default Title","offer_id":50987389681712,"sku":"PS1854","price":10.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0631\/9459\/5376\/files\/IronOxideRedimage2.png?v=1793664708","url":"https:\/\/quarryarts.org\/products\/iron-oxide-red-250g","provider":"Quarry Arts Centre","version":"1.0","type":"link"}