And the new book will be released ...
http://www.amazon.com/gp/product/1851777555/ref=s9_psimh_gw_p14_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0X5VJJZHVE1SZMQVC5WH&pf_rd_t=101&pf_rd_p=1389517282&pf_rd_i=507846
Hi! Sarah and GemGreek,
Yotsuba have a website : http://www.yotsuba.ne.jp/english/
The comany also sells polishing soap for surface abrasion of a pearl.
: http://www.yotsuba.ne.jp/english/archives/2006/09/156.html