Stone Hi Caliber Sale Company produces a diverse range of minerals, with the main specialty in the exploration, discovery, exploitation, production, marketing and sales of Strontium Sulfate Ore (Celestite) [chemical composition: SrSO4], Iron Ore (Hematite) [chemical composition: Fe2O3] and Copper Ore [chemical composition: CuO | Cu2S | CuS] from our privately owned deposits. We also supply peripheral minerals on demand including Chrome Ore, Lead Ore and Zinc Ore.