So the short version is MDG approached me to take a look at the goodies… Groovy bits. 
[EDIT] I found out more about the dice manufacture:  “Our Metal Dice are forged from solid zinc and are offered in plated or painted color options. Each set is sealed to make them some of our most durable dice. “

I have a coupon code for you folks that just have to have heavy, fine looking metallic dice. Its simple bigboard2020 or just use this URL – www.metallicdicegames.com 

[Note Edit:  you receive a 10% discount I just found out. ]

Here are some close ups:

 

 

Various metal types of 1d6: