Avogadro's Tie BarAvogadro's constant: "the number of elementary entities per mole of substance". It's a big number which is to say, there's a lot of stuff in the universe. Wear a piece of it with this hand stamped tie bar. Available in aluminum or bronze, it is sturdy enough to last a lifetime. (Note that hand stamped lettering varies a little, so yours will be charmingly unique.) Perfect for: Chemists of all types Molecular biologists Science teachers Mole Day

They dangle delightfully from gold plated or stainless steel hooks and are strong enough to last for years and years

Mothers of young children (aka velociraptors

starch granules

wear your eclipse pendant on top of clothing instead of under it and avoid anything rubbing against the top of the moon disc

scarecrows

The tiny heart cutout on the front shows a peek at the golden pages inside

Don't we all

zoo-keepers

Breadboard not included

Biology teachers

anyone who cares about the magnificent variety of life on our wild

this necklace is a meaningful accessory you'll cherish for years to come