The blue rectangular-cut gem with VVS2 clarity has an estimate of $10 million ... and a 12.65-carat no-heat cushion-shaped Kashmir sapphire mounted on a platinum ring surrounded by pear-shaped ...

From Grace Kelly's 10-carat sparkler to Kate Middleton's oval ... In more recent years, she's been seen wearing an oval-shaped blue sapphire ring. The Ring: A classic baguette band with 16 white ...

The 9.85-carat emerald-cut Kashmir sapphire has ... cut very light blue fancy diamond on a ring that sold for $162,500, smashing its $30,000 high estimate. * A 10-carat emerald-cut fancy yellow ...

AFP via Getty Images Visitors focused on the 10-karat blue diamond from South Africa ... A 40.29-carat radiant-cut fancy light pink diamond ring, left and a 102.60-carat round white diamond.

Bardem presented the actress with a three-carat, oval-cut blue sapphire in a white ... Ora didn't unveil her square-cut, 10-carat Colombian green emerald ring until a year after she and Taika ...

A nearly 7 carat oval Sapphire ring is sure to stop traffic, set between two pear diamonds and a pave band. Say you prefer a classic diamond engagement ring but also want to include rich blue ...

Royal women have often favored sapphires, especially when it comes to engagement rings: Princess Anne sports a blue sapphire ... ring features a 12-karat oval Ceylon sapphire set in 18-karat ...

Easily the most recognizable engagement ring in the royal family and the world, Princess Diana’s blue Ceylon faceted sapphire ring ... The center stone is a three-carat diamond surrounded ...

NEW YORK (CBS) When Prince William proposed to longtime girlfriend Kate Middleton on holiday in Kenya last month, his late mother, the beloved Princess Diana played a role -- she provided the ring.