Teeny tiny glass bottles with corks (now in AMBER)! 18mm tall (without the cork).
Set of 6.
In the photo below, the line-up shows tiny bottles in a Bagatelle Box - 1-1/2 x 4 Inches (left to right): one of the 12 Tiny Glass Bottles set, a Mini Inkwell Bottle, a Tiny Round Bottle (upside-down) and an Amber Even Tinier Bottle.
More info is in the blog.