I have some of those - yes, they are made by Cloud 9 and I also got them at Archiver's. The come in many different colors - I used some peachy-pink ones once to look just like flower petals... just turn the points in toward one another.
I have done the Crystal Effects/toothpick techinique before, too. What's great about doing it that way is that you can use a drop or two of reinkers to make the CE any color you want. However, the Cloud 9 stickers are a much faster and more consistent looking alternative. HTH!