Camellia Milgrain Diamond Engagement Ring - Platinum. A milgrain filament winds upwards towards round and pear shaped diamonds that rest at either side of the center stone for a subtly floral look, while a trellis-style head adds a bit of whimsy (1/10 total carat weight). The Wildflower Collection, a line of exclusive Brilliant Earth designs, features lush jewelry united by botanical motifs that illustrate the ethereal beauty of nature.