These lovely stones were purchased from an Etsy store called Ssstoned. Karen, the owner, was amazingly helpful and so generous with her items and knowledge, I recommend checking out her store, she has a great range of unique and eclectic items as well as some beautiful natural stones and gems. :)
Fluorite (Fluorspar) - CaF2 - Moh's of 4-5 so relatively easy to fracture. Looks lovely for jewellery but use with care.
Herkimer Diamonds - SiO2 - Doubly terminated quartz crystals named for Herkimer County, New York. Moh's 7.
Watermelon Tourmaline - silicate (a complex one!) - The pink-centred, green version of Tourmaline. Moh's 7-7.5