Florian Gadsby on Twitter: "Thrown mugs. Stoneware clay and crackle glazes. It's the iron content that changes their colours from light to dark. Here the darkest hues are produced by only 2%
![Alae, Kauai red clay containing iron oxide, used for color during the traditional Hawaiian method of harvesting sea salt, in wood tray Stock Photo - Alamy Alae, Kauai red clay containing iron oxide, used for color during the traditional Hawaiian method of harvesting sea salt, in wood tray Stock Photo - Alamy](https://c8.alamy.com/comp/DY2T1G/alae-kauai-red-clay-containing-iron-oxide-used-for-color-during-the-DY2T1G.jpg)
Alae, Kauai red clay containing iron oxide, used for color during the traditional Hawaiian method of harvesting sea salt, in wood tray Stock Photo - Alamy
![Red Iron Oxide wash over antique lace on outside, Wasabi Celadon x3 on inside. Reclaimed clay. Funky. | Pottery art, Pottery, Ceramic art Red Iron Oxide wash over antique lace on outside, Wasabi Celadon x3 on inside. Reclaimed clay. Funky. | Pottery art, Pottery, Ceramic art](https://i.pinimg.com/originals/d9/0b/b0/d90bb05b37f1fc1df7c5df63f6d9d887.jpg)
Red Iron Oxide wash over antique lace on outside, Wasabi Celadon x3 on inside. Reclaimed clay. Funky. | Pottery art, Pottery, Ceramic art
![Handbuilt mug with iron oxide wash by CeramicsbyBatya on Etsy, $62.00 | Ceramic clay, Pottery mugs, Pottery techniques Handbuilt mug with iron oxide wash by CeramicsbyBatya on Etsy, $62.00 | Ceramic clay, Pottery mugs, Pottery techniques](https://i.pinimg.com/236x/ce/51/45/ce514523a44d9bcb98b86904dad71c48--pottery-mugs-pottery-ideas.jpg)
Handbuilt mug with iron oxide wash by CeramicsbyBatya on Etsy, $62.00 | Ceramic clay, Pottery mugs, Pottery techniques
![How should I apply Red Iron Oxide for this effect? - Clay and Glaze Chemistry - Ceramic Arts Daily Community How should I apply Red Iron Oxide for this effect? - Clay and Glaze Chemistry - Ceramic Arts Daily Community](https://content.invisioncic.com/r278179/monthly_2019_03/285774405__20190316092640.jpg.55b1118f14e9020851f62f0340b351ac.jpg)