black diamond

noun

1

: dense black hematite

2

black diamonds plural : coal sense 3a

3

: carbonado entry 3

Examples of black diamond in a Sentence

Recent Examples on the Web

That year’s $5 million Black Diamond Fantasy Miracle Bra was covered in black diamonds, white diamonds and rubies. — Maggie Clancy, Footwear News, 19 Oct. 2026

Designed by Martin Katz, the bra featured nearly 3,900 gemstones, including two black diamond drops and 120 round white diamonds, with a total weight of 1,500 carats. — Amanda Le, InStyle, 17 Oct. 2026

The black diamond backdrop framing the classic cowboy spur really nails the retro look. — Jon Root Outkick, FOXNews.com, 12 Oct. 2026

When Pogosian set one of his early pendants, a hexagon built around the number six, his lucky number since birth, with black diamonds. — Stephan Rabimov, Forbes.com, 10 Aug. 2026

Word History

First Known Use

1763, in the meaning defined at sense 3

Kids Definition

black diamond

noun

: carbonado