4mm White Moonstone Heishis needed

A friend is doing beading & crafts as a hobby & potential business, and now needs these 4mm White Moonstone Heishi-style beads. If she wanted Rainbow Moonstone or beads over 4mm, we’d have plenty but no luck with the White 4mm. And yes, I’ve googled. Anyone have any ideas who I may have missed for these?

Are these what you are looking for?

Thanks, but she already ruled those out- we wrote the company about what 4+mm meant, and the response was that they were between 4 to 6 mm.

The closest I found is 5mm heishe from Fire Mountain Gems. The 1 mm difference should be effectively invisible.