Art Nouveau Sapphire Trilogy Ring diamond It's secured in place by

It's secured in place by four prongs

Its popularity exploded when Napoleon presented his second wife Marie Louise with a full cut steel parure (as he was unable to afford one made with gemstones

Fortuna was very much in control of - literally steering - the changeable fortunes of life

a subtle nod to ancient pieces recovered during 18th and 19th century excavations in Europe

The idea was elaborated upon by Herman Potočnik in his 1929 book Problem der Befahrung des Weltraums (The Problem of Space Travel)

Art Nouveau Sapphire Trilogy Ring diamond It's secured in place byGorgeous Art Nouveau trilogy ring dating from the turn of the 20th century, circa 1900. Crafted in 18 carat gold, vine like tendrils present the three stones two blue sapphires and an old cut diamond set slightly diagonally off the north south line. Era: Art Nouveau, circa 1900 Ring size: N or 6. 75 US. Resizeable for 55 Head: 14. 2mm by 10. 6mm Stones: Natural Sapphire & Old Mine Cut Diamond Marks: Stamped 18CT Condition: Great antique condition;