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.
Great Dane and Irish Wolfhound. A giant dog breed has no universal height or weight classification, although some groups define giant breeds as those heavier than 50 kilograms (110 lb). Giant breeds grow rapidly, but take longer to mature into their full adult sizes than smaller dogs.