I have used a large, delicate Cubic Zirconia tear drop connected to a round Swarovski pearl. I have put it onto a cubic zirconia detailed bail. All material used is platinum plated brass. I have put it onto a rhodium plated brass, tarnish resistant chain.
# length of Necklace comes in two chain lengths, 16 and 18 inches with 2 inch extension chains and pendant drop is 2 inches or 5 cms