What does each of the enchanted sapphire items do, respectively, excluding ammy of magic.

Sapphire Bracelet (Bracelet of Clay)

Clay mined while wearing will be soft clay instead of hard clay. 28 uses.

 

Sapphire Ring (Ring of Recoil)

Casts 10% of the damage done on the wearer back on the attacker. Used up after 40 damage is casted back.

 

Sapphire Necklace (Games Necklace)

Teleports you to the Games Room lobby, outside the Barbarian Assault Minigame, the Wilderness volcano (formerly the Bounty Hunter minigame) or the Clan Wars Minigame. 8 Uses.

Source.

 

They are all members only enchants. Hope this helps. :)

Thank you!