Power gem Power gems were extremely powerful stones capable of emitting a shield - disrupting aura . Once part of an ancient , rare , power gems gradually lost their abilities over time , but were potent when first mined . In 23 BBY , Quenelle and Obi - Wan Kenobi attempted to locate a set of three power gems , known as the Lost Stars of Nallastia , on the moon of Nallastia . Upon finding them , they used them to dissipate an energy field . The Pirates of Iridium , prior to their destruction by the Jedi in 22 BBY , used these shards to great effect in their operations . By taking advantage of the gems ' shield - disrupting power , they could cripple spice freighters and other spacecraft , looting their contents with little resistance . Leia , however , learned of the event from her childhood as stories her father , Bail Organa , told her . While for a time it was presumed that all power gems were destroyed with their bandit owners , one of the relics survived in the possession of the smuggler and ex - pirate Raskar . Retiring to a remote Outer Rim planet , Raskar kept the gem until a worthy foe bested him in combat . Eventually , he was trounced by a cocky smuggler and his furry companion , and was forced to relinquish control of the last power gem , the item that they were sent to retrieve by the Rebel Alliance as a last resort against the " Executor " . After joining the Rebel Alliance , Han Solo and Chewbacca , upon retrieving the power gem , turned their acquisition over to General Jan Dodonna immediately following the Battle of Yavin . In a futile effort to destroy the Super Star Destroyer " Executor " , Jan ' s son , Vrad , took the gem and flew skyward . The resulting event did little to disrupt the warship ' s shield — hardly any power was left in the gem after all the years that had passed . While the general ' s son failed to destroy " Executor " , his brave attack did buy the Alliance time to successfully evacuate the Yavin 4 base . In addition , the little amount of shielding that was disrupted nonetheless allowed the " Millennium Falcon " to damage one of the " Executor " sublight engines . Besides the power gem kept by Raskar , there were other power gems scattered across the galaxy , usually buried , which some spacers attempted to locate during the Galactic Civil War . While not as potent as to disrupt the shields of enemy vessels , they were nonetheless powerful enough to mitigate damage on its wielder , as well as enhance their ability to dodge . In addition , they also acted as a pink light source for various spacer houses . Behind the scenes . The power gem first appeared in the " Star Wars " comic strip story arc " The Power Gem " , where Han Solo was dispatched by Princess Leia and the Rebel Alliance to find one to mount a defense against the " Executor " . It didn ' t see use until " Doom Mission " two story arcs later . Despite the comic strips strongly implying that the power gem that Han Solo found was the last remaining gem in the Galaxy , several power gems were found as extremely rare loot items in the online game " Star Wars Galaxies : An Empire Divided " , albeit with significantly different properties . The power gems , if found by players , allowed the player to access an ability called " Power Stone Dodge , " which increases their dodge ability by 3 % , and removes a debuff . The effect was estimated to have a duration of 2 minutes , and its reuse time was 60 minutes . The description erroneously labels it as having a blue color .