We have high quality limestone, boulders, stone, aggregate that suits for sea backfilling, concrete, and other constructions. Hardness: >9 CaO > 53% Silic > 0.82% Magnesia > 1% Size: 60-80cm 20-30cm 10-20cm 5-8cm 2-5cm 1-2cm Others: Based on your requirements. Note: The given FOB price is without VAT.