Our same great little 10mm cube (1mm hole in the center) with exterior but with a base of black Murano clear Crystal Glass in the Klimt style with small pieces of millefiori glass inside over .925 sterling silver foil. These are a great size for your Murano Glass Jewelry and bracelets or earrings. The exact size, shape and color of the bits of colored glass and millefiori are completely random as well as the sterling silver foil coverage. No two are ever exactly alike.