Why am I seeing the Type Gems a lot in Smogon Doubles sets?

Question

Lel, this question was aimed at AD o3o

Comments

well, it boosts acrobatics 165 base Power, and activates unburden, but im not sure why it would be more popular in doubles

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I suppose powering up a move a lot once works best in double battles.

Answer 1

On the other hand, type-boosting Gems boost a single attack for a one time use. Double battles are usually short enough that one boosted attack is enough to decide the outcome.

~ Smogon

Hope I helped :)