

What Stone could this be?
I recently started wearing my late mother’s ring. She wore it all throughout my childhood. From what I can remember as a kid, it was each of my family’s birthstones:
My mom and I: April - Diamond
My brother: September - Sapphire
My sister: May - Emerald
I can’t figure out what the last stone is! My dad was born in June. And when I google June birthstones, pearls, alexandrite, light amethyst, and moonstone come up.
I assume it’s a light amethyst?? It is just a touch darker than the April stone, and looks more light grey than purple in most lighting. This ring is at least 20-25 years old, so I am unsure if the color has changed over time.
Like I said, my mom has passed now and my dad doesn’t remember much about it, so I don’t have too many details
***I should also say that I have no idea if these stones are real or not but I would assume they are (?) since she had had it for at least 25 years and she never really wore costume jewelry.
TIA!! :)
*For rules: this is a gold ring (I’m pretty sure) but I am insure if the stones in it are real. I am unsure of the price as it is my late mom’s, but I know it is at least 20-25 years old