Precious gemstones that are deep red in color, made of the mineral corundum and extremely valuable.
From Old French 'rubi,' derived from Latin 'rubeus' meaning 'red.' The word has been used since the 13th century to describe these valuable red gems, with the color always being central to its meaning.
Rubies are actually the same mineral as sapphires—corundum—but their deep red color comes from trace amounts of chromium, and this tiny difference in chemistry creates one of the most valuable gemstones in the world, worth more per carat than diamonds.
Complete word intelligence in one call. Free tier — 50 lookups/day.