Each stone varies. Kumbamba jasper is known more commonly as "Nebula Stone." It effects all Chakras especially the Root (1st) and Crown (7th). There are many things that this stone is good for including: bringing spiritual Light into matter, attuning to probable futures, fulfilling one's highest aspirations and feeling at home in the body and on Earth. Kumbamba jasper loves to be held as it gives a calming sensation to the one holding it.
Physically, this stone purifies the physical body as well as detox from chemical abuse. It's a great tool to use for breaking self-abusive patterns and behaviors. Kumbamba jasper is ideal for recovery from alcohol or drug addiction and it releases toxins and heavy metals from the organs and tissues. Also, regulating cystitis and promoting fertility in women is another popular use.