For those born in the month of March, the official gemstone is the Aquamarine. It can range in color from a very pale shade, almost colorless, which is also the most valuable, to a most sought-after deep-blue aqua.
English Mastiff is the largest dog breed in the world by considering the mass. This breed has an average weight of 68-110 kg and shoulder height of 27-33 inches. On 26th September 1981 the Guinness book of world records recognized an old English Mastiff named Zorba as the heaviest and longest dog in the world.
The different mastiff breeds have been bred for guarding and for fighting. The two most expensive dog breeds in the world are the Tibetan Mastiff and French Mastiff. A Tibetan Mastiff. The largest Tibetan Mastiffs can stand over 31 inches tall and the breed typically weighs over 140 lbs. The dogs can be black, grey, brown or even, in some rare instances, completely white.