10mm Synthetic Ruby Ball – Sphere, Corundum, Lab-Created – For Bearings, Lenses, Craft

This is a 10mm synthetic ruby ball, made from lab-created corundum.

It's perfectly spherical and can be used for all sorts of things—bearings, lenses, craft projects, or just as a cool little object.

Since it's synthetic, it has the same hardness and properties as natural ruby but at a fraction of the cost.

Unbranded, but it's a solid little sphere of red corundum.

If you need a ruby ball for a project or just want to add one to your collection, this is it.