This Namibian rock can flow on vertical surfaces which, in the past, has caused many losses so now I apply it more thinly. On porcelain it appears to be white and on stoneware, golden and speckled because of the reduction atmosphere causing metallic oxides in the clay to integrate with the glaze.

For another glimpse into this sample, visit the Snowball Earth section of Joan Lederman's blog.





650 MYA Rock Deposit
650 MYA Rock Deposit

4.5" x 3"

Exterior mottled area is rock slurry glaze influenced by merging of metallic oxides in the clay with the Snowball Earth sample during firing. (On porcelain clay this sample would be close to white.) Interior shiny white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-103US$60.00
Namibian Rock on Porcelain
Namibian Rock on Porcelain

3.75" x 3"

Exterior is Namibian rock. Click for biggest image to read words. Interior glaze assembled from refined materials.


Availability: Usually ships in 2-3 business days

C-819US$65.00
Snowball Earth on Stoneware
Snowball Earth on Stoneware

4.5" x 3.5"

Exterior bottom mottled glaze is the Namibian rock that reports Snowball earth. Interior and lip are white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-274US$60.00
Namibian Rock on Stoneware
Namibian Rock on Stoneware

3.75" x 3.75"

Exterior mottled area is rock influenced by merging of metallic oxides in the clay with the Snowball Earth rock slurry at high temperature. Interior shiny white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-102US$50.00
Snowball Earth on Stoneware
Snowball Earth on Stoneware

4" x 3.5"

Exterior mottled area is rock slurry glaze influenced by merging of metallic oxides in the clay with the Snowball Earth sample during firing. Interior shiny white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-105US$50.00
Namibian Rock on Stoneware
Namibian Rock on Stoneware

4.25" x 3.25"

Exterior mottled area is rock slurry glaze influenced by merging of metallic oxides in the clay with the Snowball Earth sample during firing. (On porcelain clay the same sample might be white.) Interior shiny white assembled from refined materials.


Availability: Usually ships in 2-3 business days

CP-106US$55.00
Snowball Earth on Porcelain
Snowball Earth on Porcelain

4" x 3"

Exterior is the Namibian rock that was given to me as a powder--applied thinly here. Interior and top third are glazes assembled from refined materials.


Availability: Usually ships in 2-3 business days

5-MG37US$70.00
Snowball Earth on Porcelain
Snowball Earth on Porcelain

5" x 3.25"

Namibian rock, given to me as a powder, I mixed into a slurry with water and applied thinly to the exterior of this porcelain mug.

Interior and top glazes assembled from refined materials. Seaglass in thumbwell.


Availability: Usually ships in 2-3 business days

5-MG38US$90.00