Retailer Cobalt Glass Bowls - 8 Two Tone Colour

I can't say if these gorgeous bowls are vintage , there is no mark. But the colours are why these are special . They look like a beautiful light crystal .The top half is Cobalt coloured with the ribbed swirling around the bottom is an iridescent electric blue that almost glows . Each bowl is 5.75 x 5.75 x1.5 inches .