Ruby is the red appearance of corundum; every other shade of corundum are alluded to as sapphire. For thousands of years it has been considered to be one of the most valuable gemstones because of its durability brilliance and entrancing red shading. Bigger rubies, being rarer, charge the most elevated costs. This valuable gemstone has a decent hardness of 9 on the Mohs scale. Attributable to its red shading, the ruby is normally connected with enthusiasm, love, control, warmth, blood, and fire. Rubies have been worn by warriors to give them mettle, by rulers to give them control, and have been gifted as a statement of undying adoration. The most astounding quality rubies show a profound striking red or purplish red. The ruby is the July birthstone in the US.