Fired SP658 Gray Speckled clay test tile, stamped cone 5, showing the light gray body with dark speckles

SP658 Gray Speckled

25lb Block
$21.76
$21.76 $32.00
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Fired SP658 Gray Speckled clay test tile, stamped cone 5, showing the light gray body with dark speckles
  • Fired SP658 Gray Speckled clay test tile, stamped cone 5, showing the light gray body with dark speckles
  • SP658 Gray Speckled bisqueware test tile, nearly white with a chevron texture and a stamped Gray Speckle label
  • A gray speckled pottery plate with a white glaze in the center. This is Seattle Pottery Supply's Gray Speckled Stoneware
  • Speckled white bowl with a blue petal pattern inside, white gloss glaze over a mix of Sea Mix 6 and Sea Mix Speckled clays
  • Plate of SP658 Gray Speckled clay with a speckled cream glaze, a black pickle drawing on a green patch and pale blue on one side of the rim
  • Fired SP658 Gray Speckled clay test tile, stamped cone 5, showing the light gray body with dark speckles
  • SP658 Gray Speckled bisqueware test tile, nearly white with a chevron texture and a stamped Gray Speckle label
  • A gray speckled pottery plate with a white glaze in the center. This is Seattle Pottery Supply's Gray Speckled Stoneware
  • Speckled white bowl with a blue petal pattern inside, white gloss glaze over a mix of Sea Mix 6 and Sea Mix Speckled clays
  • Plate of SP658 Gray Speckled clay with a speckled cream glaze, a black pickle drawing on a green patch and pale blue on one side of the rim
SP658 Gray Speckled

SP658 Gray Speckled

$21.76
$21.76 $32.00
Size (25lb Block)

FIRING RANGE: CONE 4-5 (2134-2160º F)

  • Wet color: gray/buff
  • Firing color (in oxidation): silvery-gray with speckles
  • Texture: slightly smooth (< 5% grog)
  • Average shrinkage: 10.15%; average absorption 3% (+/- 2)
  • 25 lb. block

New and Improved Formula as of 2026!

You asked, we answered! Our "limited release" Speckled Gray is back to stay! Based on our new Sea Mix 6 clay body, with added granular manganese and magnetite, it throws and builds with all the excellent qualities you'd expect from Sea Mix 6—just with a nice dispersal of brown freckles.

This clay tightens up early in the firing process. It performs best at Cone 4, and fires to Cone 5 with off-gassing possible at hotter temps (similar to Fool's Gold or Eclipse). It is not recommended for Cone 6 or higher.

Simple and fun to throw and sculpt, it's ideal for wheel throwing, hand building, and functional ware.

 

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