Crystal amulets are common magical items found on creatures in GemStone IV. These items, when worn and rubbed allow a player to access a realm-wide thought net, where they can transmit their thoughts to communicate with other players in the same realm by means of the THINK verb.
New "ESP" controls have been implemented for crystal amulets. Pull, turn, and touch have been replaced with General, Merchant, Guild, and individually named channels. Players must now THINK on specific channels or thoughts will be sent to the default. See ESP for details.
- Allows the player to access the black or subdued thought channel. This channel is commonly used for the purposes of merchanting in Wehnimer's Landing.
- Allows the player to access the white or muted thought channel. This channel is largely unused.
- Allows the player to access the grey or faint thought channel. This is the default channel for the thought net, and is generally used for casual communication. Merchanting on the grey channel is generally frowned upon in most towns.