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.
Here are some of the largest dogs on earth and the most popular giant dog breeds around. 1  of 10. Beanstock Images / Getty Images One might argue that this huge and majestic creature more closely resembles a small horse than a dog. 2  of 10. Relaxed English mastiff. 3  of 10. Leonberger dog with tongue hanging out. 4  of 10. Close up of Bull Mastiff dog.