The crystal in this goblet is wonderfully crystal clear and just sparkles! I am not familiar with Josair Crystal, the best I can tell is that it may have been made in Germany or Sweden. I identified the goblet and pattern on Replacements, Ltd, which sells this stem for $89.95. The pattern is called "Empire" and was produced from 1964 to 1988.
This is the water goblet. It stands 7-3/8" tall. The goblet has a cut line about 1/3 the way down from the top, below that are eight large looped panels. The stem has eight sides also and the foot has a star pattern. I tried to take a photo of the acid etched crown mark on the bottom, I'm afraid it didn't show very well.
The goblet is in excellent condition, NO CRACKS, CHIPS, SCRATCHES OR REPAIRS. The crystal rings like a bell! I have a total of six of the water goblets for sale along with other stems in this pattern.