Ruby

Ruby, a stunning gemstone known for its pinkish-red to blood-red hues, is a remarkable variety of the mineral corundum, which is primarily composed of aluminium oxide. Renowned for its durability, Ruby stands out as one of the most cherished traditional jewelry gems, often referred to as 'red sapphires' in certain contexts. This gemstone is celebrated not only for its beauty but also for its historical significance as one of the cardinal gems, alongside amethyst, sapphire, emerald, and diamond.

The etymology of the word 'ruby' traces back to the Latin term 'ruber,' meaning red, a fitting description for this vibrant stone. The captivating color of a ruby is attributed to the presence of chromium, which imparts its distinctive shades. Interestingly, some stones historically labeled as rubies, such as the Black Prince's Ruby in the British Imperial State Crown, are actually spinels, previously known as 'Balas rubies.'

The value of a ruby is primarily determined by its color, cut, clarity, and carat weight. Among these factors, the most sought-after shade is the blood-red or pigeon blood hue, which commands a significant premium over other rubies of comparable quality. Clarity also plays a crucial role; a clear ruby is more valuable, while the presence of needle-like rutile inclusions may suggest that the stone has undergone treatment.

Ruby is traditionally recognized as the birthstone for July, often exhibiting a pinker tone than garnet, although some rhodolite garnets can resemble the pinkish hue of rubies. The Estrela de Fura, the world's most valuable ruby, made headlines when it was sold at auction for thirty-four million eight hundred thousand dollars, highlighting the gemstone's immense allure and value in the world of fine jewelry.