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September Birthstone Spotlight: The Timeless Beauty of Sapphires

November 06, 2025 2 min read

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Sapphires are some of the most popular and widely admired gemstones all over the world. They're often associated with desirable traits like nobility, loyalty, and wisdom. Also, the September birthstone is sapphire, all the more reason for those born during this month to appreciate its beauty and symbolism. 

What Makes Sapphires Special

Sapphires are a mineral corundum variety that consists mostly of aluminum oxide, but often have small amounts of elements like lead, cobalt, magnesium, iron, titanium, and many others. These trace amounts chemically classify them as "contaminated", but they're also the ones that provide their gorgeous coloring. Their exceptional clarity and pleochroism, which is their ability to reflect light in different colors depending on the angle, are two of the reasons why sapphires are so precious and sought after. Another one is their hardness, with the only mineral harder than a sapphire being the diamond. 

A Spectrum of Sapphire Colors: Beyond the Classic Blue 

Most people associate sapphires with the color blue. However, there are many other varieties, with their color mainly being dictated by the trace amounts of other elements. For instance, the classic blue sapphires get their color from iron and titanium, the chromium-infused ones have pink and red hues, and those that only have trace amounts of iron are usually yellow or green. 

The colorless ones are the most pure, as they have no trace elements. At the other end of the spectrum are those with high amounts of other elements. A classic example is when the corundum turns red from high chromium levels and is then classified as a ruby. 

The Royal Blue: Most Coveted of All Sapphires 

Despite the wide variety of colors and hues, the classic blue sapphires are usually the most precious and desirable. However, there are noticeable differences between different types of blue sapphires. The most sought-after ones have a deep and vivid blue color, while the slightly less valuable ones have green or gray undertones. 

Sapphire Jewelry: Timeless Designs and Modern Styles 

While sapphires are gorgeous by themselves, they can also enhance a wide variety of jewelry for both men and women, including rings, necklaces, earrings, and bracelets. Countless stars, including Elizabeth Hurley, Victoria Beckham, Katy Perry, Elizabeth Taylor, and Princess Diana, have worn sapphire jewelry. It was also Kate Middleton's engagement ring when she married Prince William. 

September Birthstone Sapphire: Why It Continues To Captivate Hearts Worldwide 

The reasons for the September birthstone being sapphire are strongly tied to its symbolism for nobility, wisdom, and loyalty, which are also widely attributed to those who were born during this month. It also symbolizes purity and knowledge, and it's widely believed that the wearer will benefit from good fortune and an enhanced clarity of thought. If you're looking for a gorgeous sapphire, either for yourself or as a gift to a loved one, you can find it in Sky Diamonds' carefully curated selection. Celebrate September with sapphire jewelry from Sky Diamonds.