Hi, they are lovely, are you in Australia?
They look like Aussie sapphires.
if you’re in Sydney you could make an appointment to see Doug Menadue from Bespoke Gems, he is a gem cutter.
He can advise you about facetting and the cost to do so.
google him he has a website,
I can’t be of much help but they look like Australian or Montana sapphires. The shapes are cool but not ideal for cutting. If I were you, I would habe one or two faceted and keep the rest in the rough. Cool stuff!
ITA with Bron and Vivid... Australian or Montana would be my guess, as well. Very cool! And welcome to the boards!!