For sale: My best Hakka. The stone is absolutely clean and full of renge, enough that the slurry turns purple-ish. Very pretty stone and comes in its original wooden box. Bought about 6 months ago but has only seen light use. Asking $550 including shipping.
Here's the original JNS listing: http://www.japanesenaturalstones.com/hakka-lv-2-5-a181/