Smoky Quartz is helpful for those with cancer as it draws negative energies out of the body. Smoky Quartz is also known for its strong ability to absorb and ground negative energies out of the body, and into the earth to be transmuted. These properties make Smoky Quartz a great support crystal for those undergoing chemo and radiation therapies. 
As a healing stone, Smoky Quartz aids in the proper functioning of the adrenals, the kidneys and the pancreas. It has a relaxing effect, helping to block negativity, and aiding in meditation. It also helps develop ones latent abilities as a Channel, or Medium.
Smoky Quartz stimulates and purifies the base Chakra and stimulates the movement of Kundalini Energy by channeling the white light energy of the Crown Chakra into the First Chakra.
It is believed to help one come to terms with their own circumstances, becoming more acceptant of their own bodies and lives. It helps us to make our dreams into reality. It stimulates pride, self respect and self esteem. 
Smoky Quartz is especially useful for grounding and draining away negative energy.

 

Rose quartz is pink quartz that is often called the "Love Stone." It is a stone of unconditional love that opens the heart chakra to all forms of love: self-love, family love, platonic love, and romantic love. The high energy of quartz gives rose quartz the property of enhancing love in virtually any situation. In turn, this lowers stress. All in all it is a very soothing and happy stone.
Emotionally rose quartz brings gentleness, forgiveness, compassion, kindness and tolerance. It raises one's self-esteem and sense of self-worth. It helps balance emotions and heal emotional wounds and traumas, even grief, bringing peace and calm. Rose quartz removes fears, resentments and anger. It can also heal and release childhood traumas, neglect, and lack of love, in part by enhancing inner awareness. It can help with reconciliation with family and others. Overwhelming or unreasonable guilt is eased by rose quartz.
In the psychic and spiritual realms, rose quartz is often used to attract love, and for love spells. It is also used to ease the process of transition in dying. Rose quartz can be helpful for dream recall and dream work.
Physically rose quartz is used in crystal healing to benefit the heart, the circulatory system, fertility, headaches, kidney disease, migraines, sexual dysfunction, sinus problems, throat problems, depression, addictions, ear aches, slowing signs of ageing, reducing wrinkles, spleen problems, fibromyalgia, and reaching one's ideal weight / weight loss. Rose quartz is also helpful and protective during pregnancy and with childbirth. It is also sometimes said that rose quartz is helpful for supporting brain functions and increasing intellect.