Rare Tiffany & Co., Schlumberger diamond leaf-shaped brooch, American, c. 1960″s. Samuel Saidian & Sons. Derived from the Greek word “adamas” meaning “invincible,” April’s birthstone, the diamond, is thought to be the hardest substance on earth, making it a natural fit for the gemstone that best symbolizes enduring love. Mario Buccellati eternity band, 18K gold […]