Crystals are very effective, and transmit a powerful energy. However you need to tell your crystal how you want it to help you. After cleansing it by washing it in running water, send loving thoughts to it, and say out aloud: “I dedicate this crystal to (state your love wish)." Repeat your dedication everyday until your love wish manifests.
Rose Quartz crystals are best for love requests because the promote unconditional love.