Product Details. KOZAKH Certified Fine Jewelry. Genuine Opal. Handcrafted in the USA.. Available in 14K Gold or 14K White Gold.. Add this charm to your One Love Chain Necklace.. This charm comes on a beautiful card that says:. Opal - The October Birthstone. Enlighten your perspective, build your confidence, live to your full potential. Opal is the stone of opportunity, hope, and transformation. Let it serve as a reminder to keep an open mind so that abundance and opportunity may find you.