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.
From the U.K., Zorba weighed in at 343 lbs and measured almost 8 feet long from nose to tail. English Mastiffs are considered the biggest dogs as they are usually the heaviest dogs with weights over 200 lbs. not uncommon. Did you know that the Irish Wolfhoud is one of the largest dog breeds.