I have the Grace charm, so this is what my pictures will be of.
Like the portrait charms, these are tarnish-resistant. They're silver so they're probably sterling or stainless steel.
The Grace charm has a decent weight to it and is about an 1/2in tall.
The inside of the box flap has an excerpt from Happy Birthday, Kit! while the back tells us who Grace is.
I love how tiny the sculpt is, and cute. I'm not as partial to the pet charms as I am to the portrait charms, but I think they make a neat addition to a collection - or the charm bracelet Hallmark sold, especially if the other pet charms were there, too.
I would pay up to $6 for this.
A- (because I think the pets are slightly boring without the girl counterparts, but it's well done and lovely)