The Alchemist Puzzle - Set of 3

THE ALCHEMIST: Inspired by alchemy, the ancient practice of transformation, this puzzle series captures the magical pursuit of perfection.
SET DI 3 BRAIN TEASERS
Precious metals such as gold, silver and platinum are renowned for their high quality, purity and value.
This set of three represents the enduring beauty, allure and elegance of these metals, offering an engaging and refined challenge.

CHALLENGE: Disassemble and reassemble the 3 metal brain teasers
Difficulty: 3/6 HARD and 4/6 EXTREME*. Medium resolution time: 20 min. - 1 week / 30 min. - 30 days
Dimensions of the box: 27 x 14 x 15 cm / 10.6 x 5.5 x 5.9 inches 
*The difficulty and solution time indicated are subjective: some people may take more or less time