One the most popular designers of counted cross stitch, Teresa Wentzler's designs are not for the novice stitcher. This one is no exception and many people just collect the leaflets, with just the dream of completing one of her designs.
Diamonds In Squares is an elegant, geometric design done in mostly blues and golds, enhanced with Mill Hill Gold Glass Beads.
Copyright 1993 by Symbol of Excellence Publishers, Inc. I do know that this was later reprinted (in 1999) by Leisure Arts, whom I believe bought out Just CrossStitch/Symbol of Excellence, so this is one of those hard to find printings. New, unused condition.