Liquid Metal Necklace is a visual utility effect. The magician removes the necklace and allows the spectator to examine it. Then, the magician borrows a ring from the spectator and visually penetrates it inside the necklace. After that, the ring visibly penetrates through the outside of the necklace.
Advantages:
Visual and practical.
Perfect for daily performance situations.
Super easy to do. Anyone can learn it in 5 minutes.
