Holcim will offer shareholders one new share for every seven held at a price of 52 Swiss francs ($41) under a capital increase to raise 1.5 billion francs, the cement group said on Thursday.  Detailing a previously announced capital increase, the firm said the increase was fully underwritten by a syndicate of banks on April 7 and that plans to issue 28.74 million new shares would be presented to the annual general meeting on May 14.