French Grey Salt Origin: Guerande, France Description: Our French Grey Salt is 100% natural and carries the ‘Nature & Progrès’ certification label from France. Packaging: Plastic jar with shaker lid. Jar designed so you can stack up your favorite chef salts. Net Weight: 4oz Grain Size: Fine Properties: Natural light grey color, certified by ‘Nature & Progrès’ in France Ingredients: Pure French Grey Salt. Shelf Life: 10 years Use for: Gourmet food salt, culinary.