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Posts: 204
Reply with quote  #1 
Originally Posted on: Mar/09/2005 9:06 by New2Clay
Searching for Blue Glazes
Blue is my favorite color of glaze, but there are no blue glazes on this website. Will someone share some? We fire cone 10 reduction or 9-10 in electric. THANK YOU!!!!!!!
How about the classic BLUEBERRY:

Cone 10 Reduction
but behaves well at cone 9 too
Light blue grey, opaque. Generally does not run
I forced it to run with three thick dips for the
test piece.

Custer Feldspar 40
Whiting 23
EPK 22
Flint 15
Cobalt 0.10
Rutile 4
Blue brown bowl by Wendy WoodAnother classic:

Blue Brown
Cone 10 reduction
High Gloss cobalt blue, breaking to brown where it is thin (such as the edges of the pot)

Soda Feldspar 168
Flint 108
Ball Clay 52
Whiting 72
Red Iron Oxide 16
Rutile 16
Bentonite 4

Blue Brown is one of those great glazes that always seems to work even when the firing goes horribly wrong. Although it is designed for cone 10 reduction, I have seen it work at not-quite-cone 9, cone 11 and where we really did not get any reduction at all. Plus it looks good.
Okay, one more blue

Ultra Blue
Cone 10 Redux or Oxidation
High Gloss Blue to Blue-Green (color depends on Redux/Ox)

Custer Feldspar 390
Flint 290
Whiting 193
EPK 77
Ultrox 39
Cobalt Oxide 4
Chrome Oxide 6
Bentonite 10
Granulated Illmenite 1
Because this is a truely transparent glaze, it is best on white clay, especially smooth clay like B-Mix.

Saphire Blue
Completely Transparent, High Gloss Deep Cobalt Blue
cone 10, reduction or oxidation

Whiting 24
Custer 28
EPK 20
Flint 28
add: Zinc Oxide 3
Chrome Oxide 0.3
Cobalt Carbonate 1.0

This glaze creates a wonderful high glass black with good depth when used over the ungodly green posted under the green cone 10 glaze section.
Images are:  Blue Brown, Saphire Blue and then Blue Brown on b-mix.  Notice the nice purple the happens on very white clay (b-mix and porcelain.)


Posts: 5
Reply with quote  #2 
Here's another really nice transparent blue that fires well in reduction or oxidation.  I acquired it from one of my college ceramic instructors who used it for a studio glaze.  Unfortunately, I don't know where he got it from.  The amounts for this glaze are in grams for a very large batch.  For a test batch, I just divided the entire recipe by 10.

Silica                      3240                          

Whiting                   2100

Nepheline Syenite    2052

EPK                        1200

Red Iron Oxide        180

Cobalt Carbonate     45

Hope this helps!

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Posts: 9
Reply with quote  #3 
I found this one online and it makes a really nice cone 10 translucent blue that breaks brown to orange over the rims/detail. It works really nice with b-mix, but not so great with clay bodies with iron like HB or death valley.

Woo Blue
G-200 Feldspar 4158
Whiting 1784
Silica 2675
Ball Clay 1283
Bentonite 100
Red Iron Oxide 391
Rutile 391

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Posts: 6
Reply with quote  #4 

Iron Blue ^10


ball clay 10

whiting 20

silica 30

kaolin 40

red iron ox 4

rutile 4


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Posts: 6
Reply with quote  #5 

Matt Blue ^9-10 reduction or oxidation

pale blue to bright blue based on the amount of cobalt used.


soda feldspar 51%

kaolin 30%

calcite 21%

silica 200 mesh 8%

cobalt carbonate .5-4% to desired color




Royal Blue ^10 reduction or oxidation


nephelene syenite 30%

whiting 15%

talc 5%

zinc oxide 5%

ball clay 10%

silica 200 mesh 35%

cobalt oxide 1%  (double to use carbonate)




Blue Green ^10 oxidation or reduction


potash feldspar  35%

whiting 10%

dolomite 20%

bentonite 5%

silica 200 mesh 30%

rutile 10%

cobalit oxide 1.5 (double to use carbonate)




Blue Speckle ^10 oxidation or reduction


potash feldspar 55%

whiting 15%

ball clay 5%

silica 200 mesh 25%

red iron oxide 4%

rutile 3%


Posts: 10
Reply with quote  #6 

I really like Leaches Limestone. Kind of natural while still being a bold blue.



cone 10  fire in reduction

blue, grey blue, blue/green


Kingman Feldspar  31.82

EPK 9.09

Whitig 18.18

Barium C 4.55

Rutile 4.55

Silica 31.82

total 100.01%


Posts: 2
Reply with quote  #7 
Originally Posted by Thomas
Iron Blue ^10

ball clay 10
whiting 20
silica 30
kaolin 40
red iron ox 4
rutile 4

Posts: 2
Reply with quote  #8 

Thank you for your posting ... I am anxious to try this glaze as Blue-Grays are one of my favorites!

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