I have used recycled silver bullet shell primers as caps for this pair of earrings with bicolor tourmaline pencil crystals. The tourmaline crystals are a pale green with a faint pink stripe inside and they are each 1/2 inch long. The earrings have 925 sterling silver ear wires.
These are from the Paprook Mine in Afghanistan.
Watermelon tourmaline is used by crystal healers to encourage a calm, centered state of mind. The green feeds the life force, while the pink soothes and calms. It attracts inspiration and friendship, and protects the wearer against misfortune. It grounds high-frequency energies.