Made out of Birch Wood and 1/4 inch thick
Metatron's Cube is a symbol that's meant to represent the journey of energy throughout the universe, and of balance within the universe. It is made up of all the Platonic Solids, but it also has thirteen circles in it to represent the thirteen archangels (with Metatron's circle at the center). All of the circles are connected by straight lines, as well, which represents the feminine and masculine as intimately tied together, showing that everything in the universe is attached to everything else. If you tug on one string, then that can reverberate through everything; sort of like the idea of the Butterfly Effect.
The Cube is also a representation of how energy flows throughout the universe. While the point of origin may be the tree of life that Metatron guards (or the throne of god, depending on your interpretation), the energy moves through him, and through the other archangels, out to the furthest point of all creation.
Metatrons Cube Crystal Grid
This complex symbol has a lot of uses, and depending on your needs you can find some aspect of it to fit into your life.
One common thing Metatron's Cube is used for is as a meditation aid. By following the pattern of energy, starting at the center, it allows you to follow the pattern as a guide. Looking through the complexity to find the simple shapes, and to see the interplay between them, can be very soothing. Additionally, though, it can help you unlock the issues you're dealing with in your life, finding the hidden meaning that lies just beneath the surface.
For others, Metatron's Cube operates as a kind of cleansing device. By imagining the symbol not as a stationary thing, but moving in a clockwise direction, it repulses and disperses negative energy while acting as a kind of battery for you to draw energy from. This centrifugal force, even if it's only in your mind, can allow you to shake off the negativity of a difficult day, and move forward with positive energy flowing into and through you.
In addition to being a guardian spirit, Metatron is also an angel of creation and inspiration. Whether you're an artist, or just someone who enjoys feeling inspired, keeping an image of Metatron's Cube in your creative space is a good way to open it up to the energy of this archangel, and the universal flow he represents. It can be particularly useful for those who need something to hang on the wall above their work desk, as it will be the first thing you see when glancing up from your work and trying to think of what step to take next with it.
Lastly, Metatron's Cube is thought of as a powerful symbol of protection against negative energy, or even darker influences. Putting it on your doors or windows would keep out unwanted influences, while allowing positive energy to flow into your home. Wearing it as jewelry, or getting it as a tattoo, is often used as a means of shielding yourself from all the negativity in the wider world, and plugging yourself into that flow of divine light.