A good-sized vintage 'large olives' round vase/bowl. It's Czech/Bohemian and made by Borske Sklo in the 1950s or 1960s. It's a lovely turquoise blue colour, with a round evenly-spaced optical geometric oval patterns. Mid-century Modernist and retro in style and era. 
About 7.5" tall (19cm) x 7.5" wide max. It's handmade, mould-blown into a mould with a spotted 'olives' design. It has the correct cross to the baseline (there are modern copies out there). 
As with many of these, the top flat polished rim is very fragile and susceptible. This example is very good with just a tiny nibble and a couple of sharper inner areas, see photos. 
A super vintage coloured glass statement, a centre piece or talking point. 
P&P to the UK included.