I gave this as a gift but it would still be nice to try and identify the maker.
A weighty bit of glass, well made and nicely finished, I assume it resembles a fruit of some sort... The body of the fruit is about 3 inches in diameter (8cm), the stem or stopper is curved and about 4 inches long (10cm). The stopper is not ground to fit and does not give an airtight seal so I guess it was intended to be decorative rather than practical (plus it does not stand 'upright'). The body was snapped off the blowing rod and the resulting mark fire polished, at the opposite end the tip is engraved with what looks like a monogram of HI or perhaps HL (the two letters joined together). The base glass is green and I assume the finish is a metallic oxide of some sort.