SOFIA (Bulgaria), May 27 (SeeNews) – Bulgaria’s Alfa Finance Holding [BUL:X26A] has set a price of 4.156 levs ($2.8/2.1 euro) per share for the sale of a 67.32% stake in mineral extracting and processing company Kaolin [BUL:6K1] to Germany’s Quarzwerke, Kaolin said on Monday.