There are many crystals that are believed to help with panic and anxiety. Here are some of the best ones:

1. Amethyst: This crystal is known for its calming energy and can help relieve anxiety, stress and fear.

2. Rose Quartz: Known as the "stone of love," rose quartz is believed to help calm the mind, balance emotions, and promote feelings of peace and tranquility.

3. Black Tourmaline: This crystal is believed to help ground and protect against negative energy, which can be especially helpful during times of panic.

4. Blue Lace Agate: This crystal has a calming and soothing effect on the mind and body, making it helpful for reducing anxiety and panic attacks.

5. Lepidolite: This crystal is known for its calming and stabilising energy, making it helpful for reducing anxiety and panic attacks.