Ruskin Pottery info

http://www.absoluteastronomy.com/topics/Ruskin_Pottery

Te Papa's Ruskin collection
http://collections.tepapa.govt.nz/Party.aspx?irn=26546

A link from the 20th Century fat lava forum about Ruskin history....

http://www.laws.sandwell.gov.uk/ccm/navigation/leisure-and-culture/museums-and-galleries/collections-online/ruskin-pottery/history-of-ruskin-pottery/

Hi Ev, Auckland Museum has some 'Ruskin Stones' small ceramic tiles glazed in trickle glazes. They are photographed online, and you will see they have "Ruskin" stamped on the back. Perhaps some of the glazes could be matched to some of the 'ruskin type' pottery listed on this site.

http://www.aucklandmuseum.com/collections-research/collections/record/am_humanhistory-object-7432?k=ruskin%20stone&ordinal=0

Thanks for the link.
The 5th photo is the nearest I can see to the glazes that are called Ambrico Ruskin like pottery.