You must test before you use it, at any scale. Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.
The raw version of rutile:
You probably want the Ceramic grade Light calcined rutile if you are making glazes:
One pound: https://www.sheffield-pottery.live/Light-Ceramic-Gr...
Ten Pounds : https://www.sheffield-pottery.live/Light-Ceramic-Gr...
50 Pounds :https://www.sheffield-pottery.live/products/light-ceramic-grade-calcined-rutile-rmrutlig50
Photo: Taken by Aram Dulyan
Date: 23'FEB 2005
Tuft of brown needles of rutile protruding from a quartz crystal, from Brazil. Photograph taken at the Natural History Museum, London.
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