Product Details. KOZAKH Certified Fine Jewelry. Genuine Diamond. 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:. Diamond - The April Birthstone. Enlighten your perspective, gain strength under pressure, respond with grace. Diamond is the stone of love, endurance, and unity. Let it serve as a reminder that true love can withstand any amount of pressure, and strengthens over time.