How much would Elizabeth Taylor's 69 carat diamond ring be worth today?

A diamond of this size with this provenance would only be sold at an auction -- unless it was sold at a private sale.

Its pre-sale auction estimate would be in the multiple millions of dollars US. It's last sale fetched US5,000,000 in 1979, and it was sold again -- privately -- for an undisclosed sum.

You can read more below, about large diamond auction prices.