Welcome to KH and back into knitting!
Here's some info on pashmina for those interested:
Pashmina is most commonly referred to shawls (and other similar accessories) made from a fiber similar to cashmere that is obtained from a breed of goat up in the Himalayan mountains.
They are traditionally very expensive (as is cashmere), very warm, very soft and very fine. Some say a test of pashmina is to pass it through a wedding ring.
In India, we usually call them Kashmiri shawls. But they are also made in Nepal and in some mountain areas of India just south of Nepal.
If you're unable to find affordable pure pashmina yarn, I would think cashmere would be a good substitute.
A lot of the times, shawls and yarn marketed as "pashmina" are just cashmere blends.