The gemstone Ruby has a blood-red to pink color. It’s a type of the Aluminum Oxide mineral of Corundum. It is the chromium that frequently imparts it a red color. Ruby is believed to be among the four precious stones, with diamond, sapphire, and emerald. The color of ruby decides its price. The most valuable are the ones that are the brightest, with a blood red color. Quite like a diamond, after the color, it is the clarity that affects the price. Though a clear ruby fetches a better price, the one lacking needle like inclusions gives the impression of having been treated. The other two factors affecting its price are carat (weight) and cut. Ruby is the customary birthstone for July. It is always pink or a lighter red than garnet.
Al2O3: Cr or aluminum oxide with chromium.
Derivation of Name
It gets its name from ruber, meaning red in Latin. Other selections of gem-quality corundum are known as sapphires.
Ruby is normally found in metamorphic rocks, like crystalline Limestone, Gneiss, and Mica-Schistetc. It is also found as an original element in some igneous rocks, generally those lacking Silica.
Ruby is eminent due its dazzling red color. It is the most renowned and fabulous red gemstone. Apart from its brilliant color, it is among the most popular gems due its durability, sheen, hardness and rarity.
For centuries, the Mogok Valley in Upper Myanmar was the chief source for rubies worldwide. For generations, rubies have been mined in Thailand, Cambodia, Burma, Afghanistan, India and in Pakistan. Rubies in a lighter shade (pink sapphires) are frequently found in Sri Lanka. After WW II, deposits of ruby were discovered in Vietnam, Nepal, Tanzania, Madagascar, Tajikistan and Pakistan.
Ruby, the red assortment of corundum has been the second hardest natural mineral known since ancient times. Most people consider sapphire, a non red variety of corundum to be blue, but can have almost any color.
Red, could be brownish, pinkish or purplish.