Beautiful set of 2 spheres, one being an asteriated (star) Rose Quartz, and the other a Rainbow Obsidian. You need light to see the star and the obsidian will appear black without light directly on it.
The rose quartz measures about 2 3/8" or 59 mm.
The rainbow obsidian is about the same 2 3/8" or 60 mm.
Learn more about Rose Quartz meaning!