You touch a gemstone worth at least 500 gold to a suit of nonmagical armor. At the end of the spell, the armor disappears into the gemstone and etching of an identical set of armor appears within the gemstone.
As long as the gem is within 5 feet of a creature, as a reaction the creature can utter a command word and the armor is recalled, donning around the creature as part of the command. The creature's initial clothes and items worn are melds into the armor as it forms, however, the creature still retains the effects of any magical items on its person. The creature is considered proficient with the armor for 1 minute after which the armor disappears back in the gemstone after 1 minute and the creature's initial clothes and worn items reappear.
You can use the gem to recall the armor 3 times total. After the armor retracts the third time, it cannot be recalled again and the gem crumbles to dust after the armor disappear.

At Higer Levels: When you cast this spell using a spell slot of 4th level or of higher, the number of times the gem can be used before crumbling to dust increases by 1 for every slot level.