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.
Hercules might be the biggest dog in the world, but the tallest according to the Guinness World Records is Gibson, a Harlequin Great Dane, who is 42.2 inches. The 170-pound Dane is more than 7 feet tall, taller than most NBA basketball players.