Gemjump Gemjump was an arcane alteration or transmutation spell that used a rogue stone as a base for safe teleport ation from anywhere to the location of the gem . Effects . This spell had two parts : attuning oneself to the rogue stone and activating the teleport . This spell was cast into a rogue stone and thereafter the caster was inextricably tied to the stone . The bond was strong enough to survive " shapechange " , death and reincarnation or resurrection , or even lichdom , as long as the caster ' s memory and intellect remained intact . At some future time , the caster could activate the " gemjump " and be instantly teleported to the location of the rogue stone , similar to " teleport without error " . This was a one - use , one - way trip that could not be reversed . This spell evolved over time , having different ranges and restrictions due to shifting the general purpose of " gemjump " from the ultimate escape for a caster to a transportation spell . The earliest versions had infinite range across all the planes of existence and teleported only the caster and his or her normal clothing . The later version only worked if the caster and the rogue stone were on the same plane , but allowed additional creatures , equipment , and goods to be brought along . The earliest version triggered the " gemjump " by an act of will , so it could be used even if the caster were bound and gagged , imprisoned , paralyzed , petrified , or magically restrained by " forcecage " , " imprisonment " , " silence " , " sink " , " trap the soul " or other such spells . The later versions used a command word which was vulnerable to " silence " , paralyzation , petrification , or even mundane means of preventing speech . In any case , to invoke the " gemjump " the caster could not be asleep , unconscious , delirious , " feeblemind ed " , berserk , or otherwise mentally impaired . Unwilling creatures could not be teleported with this spell , and their possessions gained some protection from " gemjump " as well . Teleportation could not be prevented by enclosure of the rogue stone . If there was insufficient space around the rogue stone for the caster to stand , he or she appeared in the nearest available location with sufficient room . An " anti - magic shell " around either the gem or the caster did prevent the teleport . A caster could have only one " gemjump " active on a particular rogue stone , but a rogue stone could serve as the anchor for any number of casters . The earliest version of this spell could not be removed from the gem except by destroying it . The later versions could be removed by a " wish " . It took a " limited wish " just to find out how many " gemjump " spells had been cast on a particular rogue stone , and the identities of the casters were not revealed . If a rogue stone was destroyed , all casters with a link to that stone could feel the link being broken . Rogue stones were similar to rock crystal s in hardness and spell resistance . Components . There were verbal and somatic components to casting the " gemjump " spell on a rogue stone , which had to be touched by the caster . Thereafter , the later versions required a command word to activate the teleport . The rogue stone was not consumed in the casting or activation of " gemjump " . History . This spell was found in a book that was known as " Elminster ' s traveling spellbook " although the Old Sage was not known to have claimed responsibility for the book or its peculiar habits . " Gemjump " was later published in " Volo ' s Guide to All Things Magical " and became generally known to the magical community although it was uncommon to find it .