Spectrum

Spectrum number their glazes by series rather than by name, and the number tells you what a glaze is for. The 800s are raku. The 1100s are cone 4 to 6 stoneware.

78glazes on our shelves
5families
21studio favorites
Spectrum glazes at The Clay Hole pottery studio

Spectrum by membership level

Every Spectrum glazes we stock, sorted by the level that covers it.

9Yellow Level
40Purple Level
50good on texture

The 5 Spectrum families we carry

Jump straight to a family

5 to choose from

1 of 5

Floating

Spectrum's whole 1430 series. One color floating above another, out of a single jar.

24glazes
24Purple

Cone 4 to cone 6, over cone 04 bisque

See all 24 Floating glazes

2 of 5

Texture

Nineteen reactive glazes from Spectrum. Broken, mottled surfaces that reward a carved pot.

19glazes
9Yellow
10Purple

Cone 4 to cone 6, over cone 04 bisque

See all 19 Texture glazes

3 of 5

Raku

Twenty six raku glazes in circulation and the widest raku palette we carry. Spectrum say the same glaze reduced in newspaper and in sawdust gives two different pots.

28glazes

Cone 06, over cone 04 bisque

See all 28 Raku glazes

5 of 5

Flux

A flux melts and runs down the pot, pulling the color underneath along with it. Buy your own.

1glazes

Cone 5 to cone 6, over cone 04 bisque

See all 1 Flux glazes

About Spectrum

Spectrum Glazes sell through distributors rather than direct, and their catalog is organized as numbered series. We carry their raku series and one of their stoneware fluxes.

Fast facts

FoundedSpectrum Glazes, sold through distributors
How they numberBy series. 800s are raku, the 1100s are cone 4 to 6 stoneware, the 1430s are Floating
What we carry28 raku, 24 Floating, 19 Texture, 6 metallics and mixed, plus one flux
About these images and what your pot will actually look like

We have done our best to represent every glaze here accurately, and you should still expect your pot to look different from what is on this screen.

Our glaze tile images are digitally created. They are built to show the character of a glaze, not to be a color match.

A screen is not a printout, a printout is not a test tile, and a test tile is not a finished pot. Each step in that chain shifts what a glaze looks like, sometimes a lot.

On top of that, the pottery itself changes the result: the clay body, how thick the glaze went on, whether it was brushed, dipped or sprayed, what was layered under or over it, where the piece sat in the kiln, how hot that spot ran, how fast it cooled, what was fired next to it, and how much texture the surface had. Two pots glazed from the same jar on the same day can come out different.

Treat every image here as a starting point, and treat a test tile fired on your own clay as the real answer.

Download the Glaze Bible PDF