The baguette diamond cut has its origins in the early 20th century, when French jeweler Louis Cartier began experimenting with new cuts and shapes. He would go on to create the iconic baguette cut in the 1920s, which was a rectangular-shaped gemstone with sharp corners and pointed edges. This design became popular among royalty and celebrities alike, due to its elegant shape and unique aesthetic. Today, the baguette is still one of the most timeless diamond cuts out there, and it remains a popular choice amongst jewelry aficionados.