"A sword and a nail have I made already. Now I reckon making a necklace would be fun to do."

Utilizing a much smaller hammer and sensitive tools, Jimmy began his experiment. Every single ring was painstakingly attached to the next. Every single ring a slightly different colour, from fluorescent green to crimson to deepest purple and gold. Every tap of his hammer and chisel was a new note. As he worked the chain, tiny motes of water, little ripples of heat and even a tiny snow-flake appeared.

"Curious, I can only wonder at what the completed amulet will be. Now that the chain is complete, the biggest piece is to be made."

He grabbed a bigger hammer and mixed iron, coal, a bit of silver and even a flake of gold, beating it all into one smudge against the anvil and meticulously bringing it together and folding it multiple times, before turning it into leaf again. After a while, he slowly formed it into a round shield, with filigree, and attached it to the chain.

"There, my first amulet completed."

He put on the amulet and found that he could put his hands into the fire with only feeling overly warm. That and the weather was behaving weird, though only within a stone's throw.

Jimmy's dad was a bit bemused, but was happy all the same and took the amulet from Jimmy and gave him a big meal, as Jimmy was hungry. It would take a bit longer to sell the amulet, for Jimmy's dad decided to take his time now that he was filthy rich from the Sword of Rending and Weird Voices sale.

Eventually it was sold.

The mage who bought the amulet went on to explore more dangerous areas than he had previously been unable to explore, and gather more expensive reagents than before. In fact, reagents that had previously been extremely rare and only gained via specially formed adventuring parties under specific missions when the reagents - one of which was Drake heart, an excellent reagent for temporary immortality potions - were needed by the King or high Dukes who were the only ones able to afford it. Anyway, now that the extremely rare reagents had a person able to reliably get them every year or so instead of every decade, the price of goods went to to very rare, so immortality being more accessible led to a more entrenched nobility. And elves were less unique for before only about 3 or 4 humans lived as long as them, now it was about 30 or 40 potentially.

The mage eventually got sick of the very strange micro-climate that changed every few hours and took it off after many years, and when he slipped over he died.