Hessonite gomed is often worn to protect the wearer from the effects of rahu, usually during the rahu mahadasha. If the gemstone is extremely pure and powerful, the end result is usually that rahu is heavily manifested in the physiology. This can cause a flareup of unresolved issues and karmic patterns like increased addiction and obsession. If you are able to maintain a great deal of personal and spiritual awareness when wearing a rahu stone, it can help to bring about an increase in recognition, wealth, and power. Cats eye is traditionally worn to appease ketu, also usually during a ketu mahadasha. Like with any pure vedic gemstone, its our experience that wearing a ketu stone increases ketus energy inside of the wearers energetic field. Cats eye, for ketu, often causes detachment, mysterious symptoms of hidden illness, and enlightenment through material loss. If one is spiritually in tune, detached from conventional possessions, and not particularly concerned about social empathy or connectivity with cultural norms, a ketu stone can be great for moksha. It can speed up spiritual progress, assisting the wearer in letting go of worldly expectations and attachments in the name of establishing a greater relationship with the divine.