I thought this was pretty cool. You could do any color blossom really, spray paint the branches a particular color as well, use hot glue rather than tape. Forgive me, the site it comes from is in Japanese or Korean. A little hard to navigate at times.
AN EMERALD AND DIAMOND BROOCH. Designed as an old mine-cut diamond flower blossom, set with an oval-cut emerald pistil and rose-cut diamond stamen, extending a spray of old mine-cut diamond leaves with two pear-shaped emerald buds, mounted in gold and silver
Antique Diamond and Pink Sapphire Flower Brooch. Silver, gold, the flower blossom and spray of florets and leaves embellished with 7 pear-shaped, oval and round pink sapphires, set throughout with numerous old-mine and rose-cut diamonds.