If you order it online, it will be shipped overnight. The most delicious type of the mentioned above is beluga caviar. Unsealed container with caviar can be stored up to 2 months in fridge. Of course, you should remember that it loses all its qualities once opened. Color, flavor, texture, maturity are the marks that help you find out the quality of caviar. The most expensive is Beluga caviar which color is lighter and the eggs are larger.