This is an antique Victorian paperweight.
The main body is made of very pale green glass (as you might find in old antique bottles). Inside are dark yellow and black-purple glass swirls. There is an unpolished pontil mark on the base.
These weights were very popular with Victorians - and they often featured these yellow flowers, fountain shapes or were large with simple bubble inclusions. These ones with swirls are a bit more unusual.
They are still collectable desktop or decoration items for period interiors.
Dimensions: The height is 2 1/4 inches and the diameter is 3 inches. This antique paperweight dates to the 19th century and it is in remarkably good condition.