I know that this topic has been posted many times before, but my "search" button on the site isn't working properly, so I am hoping all the talented people on here can point me in the right direction. I am just wondering what the differences are between luster dust, pearl dust, petal dust, disco dust, etc? Thank you in advance for your help! )

The difference in petal, luster, highlight and Disco dusts:

http://cakecentral.com/cake-decorating-ftopict-54059.html

HTH