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moqui marbles, utah Iron oxide concretions (Moqui marbles) Moqui Marbles, hematite concretions, from the Navajo Sandstone of southeast Utah.

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Rust | さび | Rouille | ржавчина | Ruggine | Herrumbre | Chip | Decay | Metal | Corrosion | Tarnish | Texture | Colors | Contrast | Patina | Decay | ..rh

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from The Hopeful Potter

25.02.13

base glaze: 40 Potash Feldspar, 20 Whiting, 25 China Clay and 15 Flint. for black: 4% Nickel Oxide, 4% Red Iron Oxide, 2% Cobalt Carbonate

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Everything that Sally and Neil make is unique. For full details on prices or to find out more about works, please phone Sally or Neil or email sally@macdonell-ceramics.co.uk

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Very Fine Mexican Jelly Fire Opal—. Most fire opal deposits are in Mexico. They consist of silicon dioxide or silica spheres arranged in an orderly pattern w/iron oxide dispersed throughout giving the fire opal its distinctive brilliant flame-like colors

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I love this simple line thing. Could easily do with the cobalt and a very thin brush, though the bottom is going to look clunky no matter what.

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Jenʼs Juicy Fruit with red iron oxide is on the upper half of this pot. An iron red glaze is on the bottom.