Ruby

adj. ruby-colored, having a deep red color

n. red variety of corundum, variety of gemstone with a bright red coloring

Ruby is a light pink to blood red gemstone, a variety of the mineral corundum (aluminium oxide). The common red color is caused mainly by the element chromium. Its name comes from ruber, Latin for red. Other varieties of gem-quality corundum are called sapphires. It is considered one of the four precious stones, together with the sapphire, the emerald and the diamond.
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Pokémon Ruby and Pokémon Sapphire, released in Japan as , released on March 172003 in North America for the Game Boy Advance, mark the beginning of the third generation in the Pokémon series of RPGs. Ruby and Sapphire were succeeded in 2004 by Pokémon FireRed and LeafGreen and in 2005 by an enhanced remake titled Pokémon Emerald. The games feature 386 species of Pokémon.
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Noun
1. a transparent piece of ruby that has been cut and polished and is valued as a precious gem
(hypernym) jewel, gem, precious stone
2. a transparent deep red variety of corundum; used as a gemstone and in lasers
(hypernym) transparent gem
3. a deep and vivid red
(synonym) crimson, deep red
(hypernym) red, redness
(derivation) rubify
Adjective
1. having any of numerous bright or strong colors reminiscent of the color of blood or cherries or tomatoes or rubies
(synonym) red, reddish, ruddy, blood-red, carmine, cerise, cherry, cherry-red, crimson, ruby-red, scarlet
(similar) chromatic

(v. t.)
To make red; to redden.
  

(n.)
The color of a ruby; carmine red; a red tint.
  

(n.)
That which has the color of the ruby, as red wine. Hence, a red blain or carbuncle.
  

(n.)
See Agate, n., 2.
  

(n.)
Any species of South American humming birds of the genus Clytolaema. The males have a ruby-colored throat or breast.
  

(n.)
A precious stone of a carmine red color, sometimes verging to violet, or intermediate between carmine and hyacinth red. It is a red crystallized variety of corundum.
  

(a.)
Ruby-colored; red; as, ruby lips.
  

A precious gemstone, and a member of the corundum family, rubies are always, by definition, red, but be aware that many other red gemstones and imitations might be assumed to be a ruby. Fine rubies of good color can be more valuable than diamonds, but the first synthetic ruby was created in the 1890's and became quite popular in jewelry. Synthetic rubies must be distinguished from natural by sophisticated testing by trained gemologists.