Ruby in a sentence as a noun

The pallet stones have since been upgraded to be synthetic ruby, along with the majority of the other bearing surfaces in watches, since the introduction of this book, however.

Ruby definitions

noun

a transparent piece of ruby that has been cut and polished and is valued as a precious gem

noun

a transparent deep red variety of corundum; used as a gemstone and in lasers

noun

a deep and vivid red color

See also: crimson

adjective

of a color at the end of the color spectrum (next to orange); resembling the color of blood or cherries or tomatoes or rubies