Vintage Murano millefiori closepack domed glass paperweight, most probably  by ALT in clean and bright colours of red, blue, turquoise and yellow, which are neatly arranged. It measures 7 cm diameter and stands 5 cm high. It is in excellent condition with no damage. I try to be completely accurate in my descriptions and there is some unevenness to the finish of the edge of the base from  manufacturing which you can feel more easily than see. 

Thank you for looking.