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Granular Rutile

Oxide Analysis Formula
SiO2 1.00% 1.00
ZrO2 1.00% 0.49
Fe2O3 1.00% 0.38
TiO2 97.00% 72.96
Oxide Weight 6,010.00
Formula Weight 6,010.00


Processed rutile ore (upgraded to 95%+ TiO2 by smelting). Available in a variety of sizes. It can be used at a speckling agent in glazes, however it settles quickly because of the high specific gravity. It can also be used as a speckling agent in bodies, try around 0.2% to start.

Related Information

Possible to grind your own ceramic grade rutile?

Yes, the granular and powdered grades or pure rutile are the same material. But grinding it is very difficult. Commercial ceramic grade powder is minus 325 mesh, the companies doing this obviously have very good grinding equipment. They also have patience because even in this efficient porcelain ball mill, 90 minutes was only enough to get 50% to minus 325 mesh! The color of the powder is a good indication of its quality, the finer the grind the lighter tan it will be.

0.02% manganese, ilmenite, rutile granular in a buff stoneware at cone 6

Clearly, the manganese is blossoming and producing far better speckle than the other two.


Typecodes Colorant
Metallic based materials that impart fired color to glazes and bodies.
Materials Rutile
A raw TiO2-containing mineral used in ceramics to color and variegate glaze surfaces.
Materials Ilmenite
Materials Granular Ilmenite
Materials Manganese Granular
In ceramics, it is used primarily in clays and glazes to achieve fired speckle (including the brick industry).
Materials Magnetite Granular
Materials Ceramic Rutile
Rutile mineral ground to a very fine particle size (e.g. 325 mesh) contributes titanium and iron that colors and variegates ceramic glazes.


Glaze VariegationGranular rutile is popular as a specking agent. Start with 0.2%. This material is heavy and will settle in glaze with a thin slurry.
By Tony Hansen
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