The material used in Longpi is made from a mixture of Black Serpentinite stone and weathered rock. This is mixed in a three to one ratio. Serpentinite rock provides the necessary strength and weathered rock acts as the binding agent. The contents will be evenly heated and retain most of its nutrients as compared to steel or metallic alloy tea pots. The products after use are bio-degradable. It’s non-toxic, inert and non-reactive.Brand: Tribes IndiaState: KarnatakaMaterial: Black Stone MudProduct Weight: 150 GramsNote: Although, an artisan does take care to maintain pattern and colour scheme however to create identical products a little variation could be seen against the image shown here being hand made products.Disclaimer: There might be little shade variation between actual product and image shown on the screen due to photography effect.