These are vintage Lucite Lilies in the Extra Large-32mm size. Shown here in Clear Frosted. I pair them with Swarovski Crystal teardrops Art. 5500 18mm size shown in AB.
You can also layer the flowers as shown in the second pic. This is a large flower inside of the extra large flower with an 12mm teardrop inside. Think of all the color combinations you can come up with!