September Is for Sapphires: The Most Beautiful Birthstone Jewelry Featuring Everyone’s Favorite Blue Gem
The second-hardest gemstone after diamonds is a popular choice for both everyday wear and special occasions
Sapphire is one of the most popular and versatile of the gems that also happen to be birthstones. It is the second-hardest after diamonds, which makes it a popular choice for engagement rings. While sapphire is most recognized in its signature easy-to-wear deep blue, it also comes in pink, yellow, and green. Its durability and beauty make it perfect for both everyday wear and special occasions.
Sapphires have long been a go-to to adorn the crowns of royalty: the Stuart Sapphire sits at the back of the Imperial State Crown of Britain, perhaps the world’s most famous piece of royal regalia still in use, while the still more venerable St. Edward’s Sapphire sits in the cross at the top. And Princess Diana chose a Ceylon sapphire Garrard engagement ring that eventually went to Kate Middleton. Other famous uses of sapphires include the Bulgari sautoir that Richard Burton gave to Elizabeth Taylor, the 563-carat Star of India that now belongs to the American Museum of Natural History in New York, and the much smaller but aesthetically perfect Rockefeller Sapphire.
Here are some of our favorite pieces of September birthstone jewelry.
1. Talk to Me Harry Winston Cabochon Sapphire Necklace | Harry Winston
Marilyn Monroe uttered the immortal line “Talk to me Harry Winston! Tell me all about it!” in 1953’s Gentlemen Prefer Blondes, and in 2025 the brand launched the high jewelry collection by the same name. The Cabochon Sapphire Necklace is part of that group, which at large is a sort of self-retrospective on the house’s history that speaks in exceptional stones, Hollywood glamour, and Art Deco references. Above all, the necklace is a prime example of the Winston language that lets the centerpiece stone do the talking.
Cabochan sapphires are a form of flex through restraint: the proportions of the centerpiece stone in this case are already impressive enough that there is no need to demand further attention via facets. The pure blue color and the sugarloaf criss-cross of the arresting dome already do that effortlessly.
2. Aquanaut Luce Haute Joaillerie | Patek Phillipe
Like many watches in Patek’s Aquanaut line, the Aquanaut Luce Haute Joaillerie watch uses a wonderfully practical composite band designed to resist wear, salt water, and UV radiation. Both the durability of the strap and its intense dark blue shade match it well with the sapphires ornamenting the timepiece. The face and dial are paved with 72 baguette-cut sapphires ranging through a gamut of blues, 38 baguette-cut diamonds, and 160 brilliant-cut diamonds.
3. Golden Pearl & Sapphire Cluster Earrings | Pearls by Shari
Golden South Sea pearls play nicely in contrast to cool-toned gemstones and diamond pavé in this substantial pair of earrings from Pearls by Shari. The warm pearl centerpieces themselves measure 12 mm and are set in 18k white gold.
4. Marquise Sapphires Opera-Length Necklace | Martin Katz
It is high time that the opera length made a comeback. Emily Blunt knew it at this year’s Met Gala. The dramatic style has the advantage of pulling the full body into view. This long necklace from Martin Katz features marquise-cut sapphires as the dominant stone and can be double for a different effect.
5. Knot Ring | Reza
Reza has many wonderful sapphire rings in styles and shapes to suit every personal preference, so settling on just one is a challenge. The sinuous and ultramodern Knot Ring is an excellent option among many and features an 11.62-Carat Ceylon stone of exceptional color.
6. Emerald Cut Blue Sapphire Hoop Earrings | Roberto Coin
A basic hoop that is anything but predictable, these white gold hoop earrings from Roberto Coin have a playful “inside-out” design that doesn’t hide any gems in the back. Similar hoops in diamonds are everywhere, so the use of the September birthstone makes them stand out.
7. Ocean White South Sea Cultured Pearl and Sapphire Bracelet in 18K White Gold | Mikimoto
Pearls are Mikimoto’s staple and raison d’être, but the 130-year-old Japanese label also excels in the other precious stones that they use as accents, as seen with the .96 carats of gorgeously blended pale to deep blue sapphires that adorn the band of this bangle, setting off a 8.5mm White South Sea cultured pearl.
8. Gloria Ring | Single Stone
Available by special order, the sapphire centerpiece version of the Gloria Ring from Los Angeles brand Single Stone has the elegant proportions of a classic three-stone setting, but feels somewhat cleaner. The emerald-cut focal gem has crisp lines, and the diamond flanking stones total 1 carat on their own.
9. Icon 8 Pear Shape Sapphire and Diamond Earrings | Graff
Graff can be relied on to turn out a showstopper, as with these pear drop earrings. The perfectly matched diamonds above each weigh precisely 3.01 carats on the nose, while the unheated Sri Lankan pendants offer bold, intense blue color.
10. Sapphire and Diamond Encrusted Gold Cuff | Ruth Tomlinson
British designer Ruth Tomlinson specializes in thoughtfully bohemian little somethings that capture gold and gems’ capacity for delicacy. This brushed gold bracelet is handcrafted in London, and 2 percent of its sales go to the Marine Conservation Society.
11. Sunlight Pendant | Piaget
Piaget turns its Sunlight motif blue with this 30 mm pendant, which evokes a slowly rising sun. Suspended from an 18-inch chain that will work with both turtlenecks and button-downs, the sunburst features 61 brilliant-cut diamonds and 98 sapphires.
12. Blue Sapphire Cuff | Brent Neale
New York City-based jewelry designer Brent Neale offers this cuff bracelet as a bespoke experience to be tuned to the individual client. Its unfussy approach opts against diamond pavé, instead letting the individual shapes of the flush-set sapphires function as their own ornament.
13. Chrona Ring | VRAM
Nothing but blue mosaic as far as the eye can see in this one-of-a-kind, dramatic cocktail ring from VRAM. The subtle variations in size and shade in the sapphires surrounding the oval center stone prevent monotony, not that that was ever going to be an issue.