2 1/4 uv green and yellow vortex borosilicate glass marble created by resinationglassarts in 2026. this marble has a beautiful design on the bottom of the marble . Will be signed RGA on very bottom with a titanium pen . kiln annealed for strength and stress release this marble should out live us all . let's try n find its forever home. thank you for your interest in resinationglassarts we genuinely appreciate every one of you 🙏