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

Her polish, from luxury jeweler Azature, contained a cool 267 carats worth of black diamonds, as reported by Today. — Ariel Wodarcyk, InStyle, 14 Sep. 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

At the time, Bechtel shared photos on her Instagram Stories of herself wearing her engagement ring from The 1975 singer, which features a black diamond with pavé diamonds around both the center stone and the band. — Ashlyn Robinette, PEOPLE, 19 July 2026

The namesake black diamond particles in this recipe help drive those actives deeper, just like every other product in the brand’s to-shelf Black Diamond roster. — Adam Hurly, Robb Report, 8 May 2026

Word History

First Known Use

1763, in the meaning defined at sense 3

Kids Definition

black diamond

noun

: carbonado