A custom mix of tiny pearl cabs. From 1.5mm to 4mm diameter. I'd suggest tweezers to set the tiny ones! A mixed bag with a TON of pearls (the amount shown in the tin is from one baggie).
These are also included in the Snow White Kit; see all the other kit components available to buy separately.
Design Team Member Nichola Battilana made a Magic Mirror (see the wide photo below). More info in the blog and/or see the supply list.