Ruby / Corundum

Ruby has accumulated a host of legends over centuries. In Sanskrit (the ancient sacred language of India), one of the terms for ruby is ratnaraj, “King of Gems.” People in India believed that rubies enabled their owners to live in peace with their enemies. In Burma (a ruby source since at least 600 AD—now called Myanmar), warriors wore rubies to make themselves invincible in battle. Many medieval Europeans wore rubies to guarantee health, wealth, wisdom, and success in love. As the US birthstone for July, and the world’s best-known and best-loved red gem, ruby still captivates the hearts and imaginations of gem professionals and consumers alike. Large, fine-quality rubies are extremely rare and valuable. But strong worldwide production and an array of treatments have increased availability and put rubies within the reach of most costumers. Common cutting styles for ruby include mixed-cut ovals or antique cushions for translucent to opaque stones. Corundum has excellent toughness, and it’s harder than any other natural gem except diamond. This makes it ideal for rings as well as many other types of jewelry. The name ruby comes from the Latin word ruber, whi