Opal black 2mm sphere

Compatible with COE 33 / borosilicate glass

These 2mm spheres might be really small, but they'll still catch your eye with their multi-color flashes of red, green, and blue fire. They are perfectly polished with a high-gloss finish ready to be set in glass. Like all our black opals, they have an opaque black base black base with brilliant flashes of predominantly red fire and more subtle flashes of green and blue fire.