Russian Osetra Caviar Arrives chilled, never frozen. Overnight Shipping! Russian Sturgeon caviar is one of the most popular and sought after black caviars on the market today and for good reason. Highly coveted by Black Sturgeon caviar connoisseurs around the world, this product is considered among the best of the best, an elite species of Black Russian caviar with a perfect taste, incredible texture and exotic origin. Even the dark, inviting color adds to the temptation of this roe and we're sure you won't be able to resist it.