I'm born in August, so it looks like my birthstone is Peridot :P
But...
I might be making my version of Peridot
If you haven't seen Aquamarine's Vent Book on the Gem Family I think you should go check it out
https://www.wattpad.com/1047510449-listen-to-me-rant-vent-and-other-stuff-more-people
In contrast, the Peridot he's using is a male and he's the cousin of Aquamarine,
but in my version of Peridot, she is a female (don't kill me please)
So um yeah...I might post extra detail of my version of Peridot on my Headcanon Book :P
and that's all I have to say I guess...