To me it looks like they have used gumpaste in a Gems mould - using tear drop shapes and oval shapes to get the pattern. You can dust/paint with luster to get a shiny effect. They appear to have used sugar pearls or piped royal icing for the round dots also.
I'd say it definately is a mold but I have no idea which one.
I think any gem mould would have the right shapes...just find the right sizes you need. Try First IMpressions, or CK moulds.
They could also be RI piped, either directly on the cake or on a sheet of paper and left to dry, maybe painted with pearl lustre dust. You could then choose the good ones to stick onto the cake. I think the round pearls are bought dragees.
After blowing the pic up I think Dayli might be right. It does NOT look like a mold but like each section has been piped of royal (off the cake on plastic wrap) then applied to the cake.
Thank you very much everybody for your help! You guys are awesome! I will post the ready cake picture, next week.
Thank you! Too bad the bride wanted her colours, not the original ones. :-)