Caviar comes from three species of sturgeon in the Caspian Sea. Caviar from each has its own special characteristics.
Beluga caviar: Coming from the largest of the sturgeon species, Beluga caviar is light to dark gray in color with large granules and a delicate skin.
Osetra caviar: These are dark brown to golden in color with large granules and a delicate skin. Golden Osetra, the most rare of Caspian Sea sturgeon, produces a limited quantity of light golden eggs, sometimes referred to as "Royal Caviar."
Sevruga caviar: These eggs are smaller, with a fine dark gray color.