Tiffany & Co 18k Gold Italy Diamond and Ruby Flower Brooch

These two items were passed down to me, one said Tiffany’s so I took it to La Cabrera and met with a gentleman named Paul who’s been working for Tiffany’s for 27 yrs. Paul did confirm the flower brooch is in fact Tiffany’s but the other one he said had been repaired and even though 18k was Stamped there was no Hallmark. He tested the Ruby’s and Diamond and they are all real. The diamonds are rose cut and there are 6. Long story short I have spent the past 6 months trying to find the Tiffany’s brooch and tee other one (Flower Sprig Brooch?) Paul tried to find out what year and who designed them both and he looked at catolougs dating back to 1864 and had no luck. He told me that he thinks the Tiffany’s flower may be an exposition piece created for one of they’re shows. I don’t know where to start, I have hit a dead end every time. Help! Warmest Regards, Dawn