Crocus martis
When you start making glazes you go through a glazy or glaze collection phase. You collect every old book, every whisper, every shiny new version of the color you like. Sooner the r later you learn when how to treat a glaze, to respect the chemicals in a way. My phase was without glazy but I was definitely the type to throw chemicals in a jar and shake them around untill I thought it was perfect. No sieve, no blender, no brush, just caveman style and colored dirt.
One of my many phases was looking for a good red in oxidation. NO! Not tin chrome red. I had been working at cone 10 Resurrection at this point and now reject anything that is just “deep purple with extra steps” enter van gilder's Crosus martis; a glaze that I've had my eyes on for quite some time but could never find this iron sulfate chemical… untill now.
https://glazy.org/recipes/59217
Pretty soon we're going to be doing experiments with red on oxide and this base recipe versus crocus martis and the basically is to see if there's a difference.