Up until 1918 Czechoslovakia was part of Austria-Hungary which had within it Czech lands or the historical region of Bohemia. Most of the labels in my books up until 1918 have just the company name and region. They also often have the words 'Boheme', 'Bohemian Glassware/Crystal', or 'Made in Bohemia'.
After 1918 (around the 1920s) companies put 'Made in Czechoslovakia', 'Czecho', or 'Czech' on the labels although many retained the word 'Bohemian' in some way as it was a well established name with historical connotations.
The words 'Made in Czechoslovakia', 'Czech' or 'Czecho' occur regularly on 1930s - 1940s labels so I think your vase could be 1930s/40s, especially by its looks.
'Chrysoprase' as you will know is a gemstone (usually green) and I think it was used a lot by the Czechs - so this would indicate the 'style' or range of glass
I am sure you are aware of all I have said above, and that not having any other information about the company, 'Chrysoprase - a gemstone like glass' is the key word, there cannot have been many companies using this method or name for a range of glassware?
I will have a look for that key word