After that a friend noticed a gradual change in her: "Twenty years ago she was like a diamond - beautiful, brilliant and cold.

No, recut, for he was already a diamond, hard and brilliant but with a flaw deep in the many faceted heart of him.

"Ideal" round brilliant diamonds should not have a depth percentage greater than 62.5%.

Figures 1 and 2 show the facets of a round brilliant diamond.

Most round brilliant diamonds have roughly the same girdle thickness at all 16 "thick parts".

Eight extra facets are sometimes added around the culet at the lower pyramid of a brilliant diamond.

It was a diamond, sizable and brilliant, mounted in a stickpin.

It's been stated as being the most brilliant diamond in the world.

In the clear sky beyond, her scales sparkled like a multitude of brilliant blue diamonds.

Gemologists relied on the proportions of a diamond as a means to cut and grade brilliant diamonds.