Barneys offers this simple gemstone and diamond set band by My Story.

They note, “Featuring modern birthstone jewelry, My Story sculpts The Olive stackable band from sparkling gemstones and white gold. Finished with a polished surface, this style showcases two bezel-set white diamonds that frame a baguette blue sapphire, the stone akin to the month of September. Diamonds rest in bezel settings. Baguette blue sapphire. Round white diamonds. Polished 14k white gold. 2mm band width (approximately).”

This sells for USD765.