Why Are Sapphires Blue and Rubies Red?

At Robinson's Jewelers, we're often asked why sapphires are typically blue and rubies are red, especially since they both come from the same mineral family, corundum. The answer lies in the trace elements present in the gemstones, which influence their color. Let's dive into the fascinating science behind the beautiful colors of these two popular gemstones.

The Science of Color in Gemstones

Sapphires and rubies owe their colors to the presence of trace elements in the corundum from which they form. In sapphires, iron and titanium impurities lead to the absorption of specific wavelengths of light, resulting in the gemstone's iconic blue color. On the other hand, rubies get their red color from chromium impurities. The chromium atoms cause an intense absorption of light in the yellow-green region of the spectrum, which, when combined with the corundum's inherent properties, gives rubies their vibrant red color.

Varied Hues and Exceptional Jewelry

While the most common color for sapphires is blue, they can come in a variety of hues depending on the type and amount of trace elements present. Sapphires can be pink, yellow, or even green. Rubies, however, are always red, but their shade can vary from pinkish-red to a deep, pigeon blood red, the latter being the most prized. At Robinson's Jewelers, we feature a stunning array of sapphire jewelry and ruby jewelry, allowing you to choose pieces that resonate with your personal style and color preferences.

Discover Your Perfect Gemstone at Robinson's Jewelers

Understanding the science behind the color of sapphires and rubies adds an extra layer of appreciation for these precious gemstones. Whether you're drawn to the serene blue of sapphires or the passionate red of rubies, each gemstone is a testament to nature's beauty and complexity. Explore our exquisite collection at Robinson's Jewelers, where you can find the perfect piece to celebrate the colors that speak to you.