RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.

RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.

RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.

RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.

RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.

RS Mines, The Queen's Mines, natural Sri Lankan high carbon purity, crystalline vein graphite.