Need Help Identifying Eggs
 

I noticed that there are some egg like things on a couple peices of my live rock. Some of them are purple and some are whitish. The rock has been in my tank for about 5 weeks and I just recently added a clown and a black spiky urchin. The eggs are smaller than 1mm in diameter and are in tight rows of about 10-30 eggs. Anyone have any ideas? (I took some photos but they didn't turn out very well.)

Pictures will help out. Are you sure those are not Poo from the Urchin?? The Urchin Poo a lot and most of them look like egg

here's the pics:

http://pasenau.com/pic1.jpg
http://pasenau.com/pic2.jpg