What is a very hard, naturally-occurring mineral, of which ruby and sapphire are gem quality varieties?
Ruby Ruby A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Other varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. The word "ruby" comes from "ruber", Latin for red. The color of a ruby is due to the element chromium. 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
Pokémon Ruby and Sapphire the game three and a half out of five stars. On May 7, 2014, Nintendo announced that a remake of "Ruby" and "Sapphire", titled "Omega Ruby" and "Alpha Sapphire", and it was released for the Nintendo 3DS on November 21, 2014 worldwide, with the exclusion of Europe, where it was released on November 28, 2014. Pokémon Ruby and Sapphire The gameplay is mostly unchanged from the previous games; the player controls the main character from an overhead perspective, and the controls are largely the same as those of previous games. As with previous games, the main objectives are to catch