The medium to large grey pearls are clear to the eye as well as the palate evoking a firm, buttery and smooth taste. Nothing but the highest grade sustainable. Pure Russian Osetra. This selection of our Russian Osetra Caviar is processed with fine sea salt and the highest quality Russian Sturgeon Roe, resulting in a clean and fresh taste that provides a hint of the sea and a delightful finish. There have been two main species of Osetra Caviar in the Caspian Sea: The Russian Sturgeon (Acipenser Gueldenstaedtii) is what Russian Osetra is made of. The other species is the Persian Sturgeon (Acipenser Persicus). The unopened shelf life of this caviar is 8 weeks. After opening this caviar should be consumed in four days. Due to temperature sensitivity, we specialty ship our caviar to hold the utmost quality.