I suspect these are from a trinket set - they look vaguely familiar but I can't pin them down!
The colour is a pale lilac - I can't make out if it is sun-purpled or a proper colour, it is very like Rosice's amethyst.
Dimensions: 4½", 4" across the base. Three-part mould. Shiny polished base as per Inwald. Quite heavy for their size.