These 4mm spheres are perfectly polished and perfectly spherical. Like all of our white opals, they have an opaque/semi opaque white base with brilliant flashes of red, yellow, and pink fire and subtler hints of blue and green. Tolerances on our spheres are +/-0.2mm. The base color opals can vary from semi opaque to solid white. If you prefer a semi-transparent or a more opaque base, please let us know in the customer comments during the checkout process and we will do our best to fill your request.
Did you know our Gilson Created Opal does not decompose, off gas or release any substances when heated to very high temperatures? Read more about our testing
here.
White 4mm Sphere