Popular crystals believed to help with electromagnetic fields (EMFs) include Shungite, Black Tourmaline, and Hematite, which are thought to absorb, neutralize, or deflect these energies. There is no conclusive scientific evidence proving their effectiveness for physical shielding, but they are widely used in holistic and alternative practices. 

Recommended Crystals for EMF

• Shungite: Highly regarded for its powerful ability to absorb and neutralize EMFs, this rare, carbon-rich stone from Russia is a top choice, especially for use with heavy device users. It is available in various forms, including pyramids and pendants.

• Black Tourmaline: Known as a classic protection stone, black tourmaline creates a protective energetic shield and is excellent for blocking EMFs and negative energies. It can be placed near electronic devices or worn as jewelry.

• Hematite: This grounding crystal with a metallic sheen is used to create a protective barrier that deflects harmful frequencies away from the body. It is known for its detoxifying properties and can absorb negative energy.

• Smoky Quartz: Believed to absorb and transmute existing EMFs, smoky quartz is particularly useful for healing the body after exposure, rather than acting as a preventative shield. It also helps with grounding and stress relief.

• Lepidolite: Due to its lithium content, this calming stone is said to reduce stress and anxiety associated with EMF exposure and disperse electromagnetic pollution.

• Amazonite: Known for absorbing microwaves and filtering out EMF pollution, Amazonite helps in balancing energy and dispelling negativity.

• Green Aventurine: This crystal can neutralize all sources of electromagnetic pollution and absorb environmental smog, making it great for home or office use. 

• pyrite is considered a good crystal for EMF protection: In holistic and alternative practices,  believed to create a protective shield and deflect negative energy

• Copper and Crystal Grids: Copper is an effective material for scientifically-proven EMF shielding when used as a solid barrier or a fine mesh in a Faraday cage configuration, due to its high electrical conductivity. Crystals are widely used in metaphysical practices for EMF "protection" to absorb, transmute, or deflect negative energy, but there is no scientific evidence that they physically block electromagnetic fields.