Sarah at Tiny Gems makes these wonderful bouquets! I just had to share it with you! I've seen some great bouquets made with jewelry but I think Sara's is the best! Not only that take the time to read Tiny Gems--it's full of little bits of great wedding advice for brides.
You can make these yourself but spend some time on trial attempts first! The first attempt is not always perfect! And you may want to collect a variety of brooches to use in different sizes and shapes as you work your way toward the final bouquet.