Grey Beluga caviar is the most prestigious of caviars, for both its unique varying grey colouring and the 20 year timeframe it takes for the fish to reach maturity. When the sturgeon is ready for harvesting,it weighs in at nearly 900kg and produces larger eggs than other varieties,with the very best examples reflecting a pale, silver shade in appearance. Beluga sturgeon are also indigenous to the Caspian Sea and there are strict rules regarding its over-fishing, only adding to the scarcity of this truly special product.