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.
The 10 Biggest Dog Breeds. 1  Tibetan Mastiff: This handsome dog is known for the lionlike mane around his head. He was bred to guard temples. The biggest Tibetan Mastiff is said to have been around 280 pounds, but these days they average 180 pounds.
The American Kennel Club states the largest dog is the English Mastiff (aka: Old English Mastiff.) They are the heaviest of the dog breeds, but the Irish Wolfhound was recorded at 5 feet at it's shoulders. Guiness Book of Records states that the dog that is the longest and heaviest in an English Mastiff named 'Zorba.'