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Yellow Gem

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Quotation1 Allows you to use the "Thunder Guard" custom action. Defends against attacks while attracting nearby Rings. Quotation2
Description, Sonic the Hedgehog (2006)[1]

The Yellow Gem (イエロージェム Ierōjemu?) is an optional Level Up Item for Sonic the Hedgehog in Sonic the Hedgehog (2006) and is one of the seven customized Gems that can be obtained in the game.


The Yellow Gem is a yellow emerald cut gem, similar to a Sol Emerald that can be equipped on Sonic's Custom Shoes. When used, it allows Sonic to create the Thunder Guard, a type of yellow Lightning Shield. If the Thunder Guard shield is destroyed by enemy attacks or obstacles, it can simply be put up again by using the Yellow Gem again, allowing a near permanent shield.

While having set Sonic's Custom Shoes to utilize the Yellow Gem's ability, the Yellow Gem changes the appearance of the Custom Shoes into a yellow pair of shoes resembling Sonic's Hi-Speed Shoes.


In Sonic the Hedgehog (2006) the Yellow Gem becomes available at the local shop, once the player clears Sonic's version of Kingdom Valley in the main story. It can then be bought for 12,000 Rings.


  • When the Thunder Guard has been activated, it will remain active, even when the player changes the Yellow Gem Level Up Item to another.



  1. Official In-Game Description
Sonic the Hedgehog (2006)

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