WATCH: Most iconic royal engagement rings of all time. In January 1923, Elizabeth was given a Kashmir sapphire – one of the rarest and most valuable sapphires known for its striking cornflower ...

Now, they can fetch astounding prices at auction. On April 25, an 11.56 carat Kashmir sapphire and diamond ring sold at Sotheby’s in Hong Kong for HKD $6,350,000 (€721,514).

Designing a custom blue sapphire ring for ladies is a beautiful and intricate process that combines both elegance and craftsmanship to create a timeless piece of jewelry. Blue sapphires are often ...

A Kashmir sapphire has just sold at Adam's for €550,000. It was originally going to go to auction for just €8,000-€12,000, before they realised it was special.

Instead, she opted to wear a pearl ring surrounded by diamonds on her ring finger—just as is shown in The Crown. Tim Graham // Getty Images The Queen Mother in 1987.

The Duke of York and Elizabeth chose a Kashmir sapphire, an extremely rare stone, ... Princess Anne has had not one, but two sapphire and diamond engagement rings.

Ring with rare Kashmir sapphire and diamonds whose estimate rose from €8,000-€12,000 to €150,000-€200,000 when the gemstone's origin was verified . Sylvia Thompson.

She went on to state that Kashmir sapphires are “very rare” as in the 1880s, there was a landslide that revealed a plethora of sapphires with the Maharaja of India claiming the region for himself.

These sapphires gained prominence following a landslide in 1880 in Kashmir, which exposed rich sapphire deposits. If the sapphire were indeed from Kashmir, the ring's value could skyrocket to ...

The highly sought-after sapphire on a ring – originally estimated to be valued at between €8,000 and €12,000 – was brought to auction in Adam’s auction house by a French woman who did ...