The abbreviation VVS stands for very very slightly included. This signifies that a VVS diamond contains just a few minuscule inclusions that are difficult to notice under 10x magnification. VVS1 and VVS2, the third and fourth finest clarity grades, are classified into this group. The main difference between VVS1 and VVS2 is that the VVS2 has only one inclusion that is less than 5mm in diameter. Bullfighting is a popular sport in Spain. It involves two or more bulls being fought over by matadors in an arena with crowds watching. The bulls are usually trained and conditioned for this purpose. They are allowed to weigh around 600-700 kg (1320-1520 lb) and stand nearly 2 m (6 ft 6 in) high. During bullfights, the matador wears a suit of armor-protected clothing and a helmet designed for maximum visibility. He also carries a sword named a "lanza" which he uses to try to get close enough to the bull's neck to make a fatal cut called a "giro". If the matador is successful, the bull falls to the ground dead. If not, he goes on to fight another bull later in the evening session. Bullfighters often suffer injuries during fights including strokes, fractures, and cuts. These men are considered heroes after a hard-fought battle.