Earl Krueger on sat 17 sep 11
I was at Macys department store today and saw a pot with
a dark, almost black, glaze that had sparkles in it.
Similar to metal flake auto paint.
It might have been tiny crystals but they were very shiny
like a mirror or polished metal particles.
How do they do that ??? Any ideas ???
Thanks...
earl
oregon, usa
William & Susan Schran User on sun 18 sep 11
On 9/18/11 12:10 AM, "Earl Krueger" wrote:
> I was at Macys department store today and saw a pot with
> a dark, almost black, glaze that had sparkles in it.
> Similar to metal flake auto paint.
> It might have been tiny crystals but they were very shiny
> like a mirror or polished metal particles.
Most likely what you saw is an aventurine glaze.
Essentially it is an iron crystalline glaze.
The crystals appear as small gold sparkles suspended in a dark brown matrix=
.
Most aventurine glazes were originally low fire, but the palette has been
expanded to high fire also.
FYI - I use a version of Ron Roy's Licorice glaze as a liner and complement
glaze with my zinc-silicate crystalline glazes and fired in a crystalline
glaze firing schedule, this iron glaze will develop sparkly iron crystals.
Just use "aventurine glaze" as your key word search and you'll find lots of
information.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Stephani Stephenson on mon 19 sep 11
Earl, I have an aventurine glaze that does that
it is basically a very fluid ,(in this case ), low fire glaze.
composed of a fluid frit , saturated with lots of iron.=3D20
about 10% red iron oxide
I'll dig up the recipe today.
on slow cooling, the iron precipitates out
it makes gorgeous copper color flakes,=3D20
like shavings from a bright copper penny
densely suspended in a glassy liquid.
this was on a flat surface . the glaze was a maroon gloss where thin.
aventurine glazes are cool, If i was 10 different people, one of them wou=
=3D
ld
be experimenting with aventurine glazes, just for the ooooooooh factor!
Stephani Stephenson
http://revivaltileworks.com
C Sullivan on mon 19 sep 11
Also, Alisa Clausen has a glaze recipe posted on her site, called
"Gold....something" (sorry to be so inept at imparting info but all my data
is packed in boxes until after the move) which will give the aventurnine
effect that Bill mentions. I fired it at Cone 6 (electric) and obtained th=
e
gold sparkles, which ironically, i wasn't seeking at that time ! It's a
good glaze.
Chae
On Sun, Sep 18, 2011 at 9:07 AM, William & Susan Schran User <
wschran@cox.net> wrote:
> On 9/18/11 12:10 AM, "Earl Krueger" wrote:
>
> > I was at Macys department store today and saw a pot with
> > a dark, almost black, glaze that had sparkles in it.
> > Similar to metal flake auto paint.
> > It might have been tiny crystals but they were very shiny
> > like a mirror or polished metal particles.
>
> Most likely what you saw is an aventurine glaze.
> Essentially it is an iron crystalline glaze.
> The crystals appear as small gold sparkles suspended in a dark brown
> matrix.
> Most aventurine glazes were originally low fire, but the palette has been
> expanded to high fire also.
>
> FYI - I use a version of Ron Roy's Licorice glaze as a liner and compleme=
nt
> glaze with my zinc-silicate crystalline glazes and fired in a crystalline
> glaze firing schedule, this iron glaze will develop sparkly iron crystals=
.
>
> Just use "aventurine glaze" as your key word search and you'll find lots =
of
> information.
>
> Bill
>
> --
> William "Bill" Schran
> wschran@cox.net
> wschran@nvcc.edu
> http://www.creativecreekartisans.com
>
Bonnie Staffel on mon 19 sep 11
That sparkly glaze is called Aventurine. I have a pot I purchased from
Eugene Deutsch, Chicago, back in 1944 that I treasure which has that =3D
glaze.
I never did pursue the recipe but thought it was a an iron glaze. My
research on the Internet brought up this URL
http://lindaarbuckle.com/handouts/glz_hg_midrange.txt
The recipes shown on this page look like Cone 5 and are available in =3D
many
colors and not food safe.=3D20
Bonnie
http://webpages.charter.net/bstaffel/
http://vasefinder.com/bstaffelgallery1.html
DVD=3DA0 Throwing with Coils and Slabs
DVD=3DA0 Introduction to Wheel Work
Charter Member Potters Council
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