Knitting needles of rock crystal quarz 18th century from England These knitting needles were used like wands. The rock crystal is considered a powerful, pure quartz stone, which bundles energies, stores and send out positive energy. Therefore, during the knitting, energy and magic passed through the hands, over the knitting needles into the knitted garment. It was also paid attention to the color of the wool. Blue for luck and health, red for courage, yellow for mental agility, black as defacement & protection, orange for justice, green for financial success & good business, pink for friendship, love & marriage.