Hello, I wonder if anyone can help?
I am intrigued by Kiho Kang's work. I met him recently at a ceramics fair and he said he uses sand in small increments to get the subtle black flecks in his porcelain. I wish I'd have asked him what he means by 'sand' - can anyone suggest what he might add to his clay to give it the black speckle? Black sand? Where would I find this? Most grog I see tends to be light coloured? His work is often un-glazed so it is not something created by the effect of a glaze.
Here is an example of his work: https://www.maudandmabel.com/products/kiho-kang-small-c