I was going to say, make the pearls yourself by rolling out fondant and punching out little circles with a round icing tip, then rolling them into little balls. But then, of course, I saw the picture of the cake, so all I can say now is "Nevermind...". Oh, and I wish you luck and hope you can find the mold! it's a gorgeous cake.
I love the perfect impressions mold-6, 8, and 10 mm. Also 12 inches long.