Product Details. Genuine Gemstone. Base Metal: Stainless Steel. Coating: 14K Gold PVD Stainless Steel. Add this charm to your One Love Chain Necklace.. Comes with a little card that says:. Quartz - The Alternate April Birthstone. Energize yourself and others, give freely, continue learning. Quartz is the stone of versatility, solidarity, and unification. Let it serve as a reminder to empower those around you, and that happiness never decreases by being shared.