Transparent NANO dye for crystal resin in red, 5ml, is highly effective for colouring epoxy resin thanks to NANO technology. The result is a transparent colour of your choice. Ideal for imitating coloured glass or coloured crystals. 5ml of dye is enough to colour 10-20kg of resin, depending on the desired colour intensity.
Safety data sheet for the transparent NANO dye for crystal resin here.