How do I unlock the secret element of the philosopher's stone in Little Alchemy 2?

To unlock the secret element of the Philosopher's Stone in Little Alchemy 2, you need to follow a specific sequence of combinations. HereÔÇÖs the step-by-step process:

1. Create Human:
Combine Life + Clay to make Human.

2. Create Immortality:
Combine Human + Fountain of Youth to create Immortality.
(To make the Fountain of Youth, combine Water + Spring or Water + Magic.)

3. Create Philosopher's Stone:
Combine Immortality + Stone to create the Philosopher's Stone.

Detailed Breakdown:
- Life: Combine Primordial Soup + Energy or Lightning + Puddle.
- Clay: Combine Stone + Mud or Liquid + Stone.
- Fountain of Youth: Combine Water + Spring or Water + Magic.
- Stone: Combine Air + Lava or Earth + Pressure.

Once you have the Philosopher's Stone, it can be used in various combinations to create other elements, such as Gold (Philosopher's Stone + Metal) or Elixir of Life (Philosopher's Stone + Water).

This is the only way to unlock the Philosopher's Stone in Little Alchemy 2. Good luck!