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Ruby Stack provides a complete, ready-to-run development environment for Ruby on Rails. It includes the latest stable release of Ruby, Rails, RVM, MySQL, SQLite, NGINX, Apache, Memcache and Varnish, Git and Subversion, Sphinx, PHP and phpMyAdmin. It also includes most popular gems for building Rails applications: Thin, RMagick, Rake, Mongrel, Passenger, Nokogiri and more. It also includes libraries such as OpenSSL, openLDAP, CURL, ImageMagick.

The quality of a ruby is determined by its color, cut, and clarity, which, along with carat weight, affect its value. The brightest and most valuable shade of red called blood-red or pigeon blood, commands a large premium over other rubies of similar quality. After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone has been treated. Ruby is the traditional birthstone for July and is usually more pink than garnet, although some rhodolite garnets have a similar pinkish hue to most rubies. The world's most valuable ruby is the Sunrise Ruby.

Favorite Things About the Ruby Language