There were 2 ruby/diamond brooches in the wedding gift list of 1947. As you say, one from Monaco the other from Prince Philip's sister Sophie Markgravin of Baden. Both wedding gift brooches are described as ruby/diamond trellis style. I have never been able to find which brooch is from where.
--Previous Message-- : From the same wedding gift list is also a ruby : and diamond : gold floral trellis brooch given by the : Monarchy of Monaco. The only difference in : the descriptions being the one word : "floral". So we have to decide if : this brooch looks like it has a floral motif : or not. I have always assumed this brooch : was the Monaco gift brooch but I could : easily be wrong. : :