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 Guinness world record for biggest (heaviest) dog was set in 1989 by an Old English Mastiff named Aicama Zorba of La-Susa, owned by Chris Eraclides of London, England. Zorba weighed in at 343 pounds. The biggest dog alive is said to be a female English Mastiff named Kell, who weighed 286 pounds in 1999.