September Birthstone Spotlight: Sapphire Q&A, Symbolism, & Styling Tips

By Oster Jewelers | September 1, 2025 0 Comments

September ushers in crisp skies, deeper tones, and the timeless beauty of sapphire, one of the most coveted gemstones in fine jewelry. Known for its rich blue hues and powerful symbolism, sapphire jewelry makes a wonderful gift whether you’re celebrating a September birthday or simply drawn to vibrant blue gemstones with meaning. This September birthstone guide answers your most-asked questions and explores the many ways to style this luxurious precious stone.

▼ Peridot Birthstone: Q&A Shortcut

• Where does the name “sapphire” originate?
• How are sapphires formed?
• What is the meaning and symbolism of the sapphire?
• When did sapphire first gain popularity as an engagement ring choice?
• How did sapphire become September’s birthstone?
• Other than blue, what other colors do sapphires come in?
• How can sapphire be worn for every day style?

Where does the name “sapphire” originate?

Meaning “blue stone,” the name sapphire can trace its origins to both Greek “sappheiros” and Latin “sapphirus.” Although the name was originally associated with any deep blue gem, through the ages it became analogous with what is commonly regarded as sapphire.

How are sapphires formed and mined?

Similar to diamonds, sapphires are formed deep within the earth under intense heat and pressure. The process generates the mineral “corundum,” created by the crystallization of aluminum and oxygen. The deep blue hues often attributed to sapphires are a result of trace elements including titanium and iron. In modern day, sapphires are typically found through alluvial mining (sifting sediment from ancient riverbeds) or through the more labor intensive open-pit mining (for stones still embedded in rock).

What is the meaning and symbolism of the sapphire?

Known as the “Stone of Wisdom,” sapphires have long been associated with knowledge, truth, and loyalty. Historically, scholars carried sapphire amulets for the belief that the stone aided in mental clarity and focus. The deep blue color of the stone was thought to reflect the vastness of the sky and infinite wisdom of the heavens. It’s rich unwavering blue hue also aligned the stone as an enduring symbol of loyalty. This, along with a Mohs hardness score of 9, has secured sapphire’s place as a popular alternative for memorable engagement rings.

When did sapphire first gain popularity as an engagement ring choice?

Sapphires rose to prominence in engagement rings during the Victorian era, when royalty and aristocrats favored colorful gemstones over diamonds. However, it wasn’t until over a century later that their modern resurgence began with the famous 12-carat oval blue sapphire engagement ring presented to Lady Diana Spencer by Prince Charles in 1981. The global spotlight on that iconic ring sparked a renewed interest in sapphire engagement rings, making them a luxurious and meaningful alternative to traditional diamond style that still endures today.

How did sapphire become September’s birthstone?

Sapphire was appointed the official September birthstone through a combination of ancient tradition and modern gemstone standardization. When the National Association of Jewelers formalized the modern birthstone calendar in 1912, they selected sapphire for September because of its long-standing cultural significance and its widespread popularity in fine jewelry. It’s association with spiritual wisdom, protection, and purity made sapphire perfectly aligned with the reflective, early-autumn energy of September. Today, sapphire remains one of the most coveted birthstone gemstones, cherished for its deep color, enduring symbolism, and timeless style.

Other than blue, what colors do sapphires come in?

Although blue sapphires are the most recognized, sapphires appear in a wide spectrum of vibrant colors known as fancy sapphires. These include soft pinks, from delicate blush to vivid magenta, and sunny yellows, ranging from pale lemon to rich gold. Verdant greens appear in sage, mint, and deep forest tones, while striking oranges vary from tangerine to sunset shades. Purples range from soft lilac to deep, velvety violet , while grey sapphires are reminiscent of a summer thundery afternoon. The rare padparadscha sapphire blends pink and orange, resembling a lotus blossom. Some sapphires even change color from blue to violet under different light. The only color not represented is red, as those are classified as rubies. The wide array of fancy colors helps make the September birthstone sapphire perfect for those that seek variety and natural brilliance in their luxury gemstone jewelry.

How can sapphire be worn for every day style?

Sapphire brings a fresh splash of color to your every day style in ways that are both versatile and luxurious. Classic sapphire stud earrings add a subtle pop of blue while remaining elegant for work or casual outings while sapphire stackable sapphire bands layer effortlessly with other fine jewelry, creating a modern yet timeless look. For a touch of drama, sapphire dangle and drop earrings elevate simple outfits without feeling overdone, and sapphire necklaces add the perfect amount of sparkle. Whether celebrating a special birthday, marking a memorable occasion, or gifting just because, discover the perfect piece to celebrate your loved one in our September Birthstone Collection. Visit us online now or at our Cherry Creek North boutique in Denver, CO.

Shop the September Birthstone Sapphire Collection