Violet is the color of amethyst. Their are two types of violet:
A true violet intended for tableware, or
Originally clear colorless glass that turned violet after prolonged exposure to UV light from the sun.
The 2nd type is often found as ink bottles. The manufacturer would have added a decolorizer to the mix to produce a clear colorless container that allowed the consumer to see the true color of the ink. However, this additive reacted with sunlight to produce a violet colors following prolonged exposure to UV rays. Once manufacturers realized this was happening, they changed their formula to produce a stable clear colorless glass.
Pink is rare to very rare in Nova Scotia. I have sourced more pink from the Carribean. It would have been used for tableware.