This pattern is from the Knitting Fool website, and it's called Openwork Diamonds 3. Click here for the link to the pattern. I work mostly in acrylic yarn, and none of these have been blocked, so they could probably look much better!
The photo above is a sample from Red Heart's Knit seaside Waves Knitting Pattern which you can find here on their website. I love the way lace looks when the light shines through it! For the longest time I wanted to make a crochet sea creature afghan for my bed, but I think I'lluse this pattern to knit it instead. Not bad for a newbie using acrylic yarn!