The Most Expensive Axinite in the World While finding ... The previous record for a ruby was $8.6 million for a Graff ruby ring. Highlights: This is an extremely rare gem in the Taaffeite family ...

Neither Princess Diana or Meghan Markle own the the most expensive royal engagement ring. Someone outside the House of Windsor does.

The $500,000 heirloom might not be the most expensive ring on the list ... It was widely reported that the center stone is either a ruby or a pink diamond, while eight white diamonds flank ...