There are several crystals that are believed to help with anxiety. Some of the most popular ones include:

1. Amethyst: known for its calming and soothing energy, believed to alleviate stress and anxiety

2. Rose quartz: believed to provide emotional healing and promote feelings of love and self-acceptance

3. Lepidolite: known for its calming properties and believed to help alleviate anxiety and depression

4. Blue lace agate: believed to promote tranquility and calmness

5. Black tourmaline: believed to help relieve stress and negative thoughts