This is a truly magnificent Art Deco engagement ring, centered on a breathtaking 10-carat natural Ceylon sapphire. The sapphire is cut in a distinctive octagonal shape, a classic Art Deco motif, and exhibits visible inclusions, a testament to its natural origin and adding to its unique character. Its rich, deep blue hue, characteristic of fine Ceylon sapphires, captures the eye and radiates a sense of regal elegance.

Flanking the central sapphire are two emerald-cut diamonds, their clean lines and geometric forms perfectly complementing the octagonal sapphire and reinforcing the Art Deco aesthetic. These diamonds add brilliance and fire, creating a stunning contrast against the deep blue of the sapphire. The entire arrangement is expertly mounted on a platinum band, a precious metal favored for its durability and lustrous white sheen, further enhancing the gemstones' beauty.  

The ring comes with a GIA Sapphire Origin Report (#6223594707), providing authentication and detailed information about the sapphire's origin and characteristics. The combination of the exceptional 10-carat Ceylon sapphire, the elegant diamond baguettes, the platinum mount, and the GIA certification makes this engagement ring a truly remarkable and highly desirable piece of Art Deco jewelry.