Gold Dust

, is the name of the weapon used by the Fourth Kazekage. Due to gold's diamagnetic properties, small particles of it can be manipulated in a similar manner to that of the sand utilised by Shukaku's jinchūriki, through the Magnet Release kekkei genkai. However, unlike his son, dark rings only appear around his eyes while the technique is in use.

In sufficient quantities, this gold dust can be fashioned into various shapes and forms. When used offensively, the Kazekage tends to form dense fast-moving surges that can range in size from narrow streams to colossal waves, intended to storm a target by violently crashing the gold dust unto it. However, when used defensively, he creates thick barricades that are durable enough to block even Gaara's Sand Hail technique. He is also able to use the Third Eye technique with his gold dust.

In the past, this weapon was instrumental to the protection of Sunagakure during the Fourth Kazekage's tenure, by allowing him to effectively subdue Shukaku each time the creature went berserk. This was accomplished by mixing in his gold dust with Shakuku's sand; thereby making it difficult for the creature to manipulate the sand by slowing it down considerably. This was because gold is much denser than sand.

Trivia

 * Gold isn't a magnetic metal like iron, nickel or cobalt. However, it is diamagnetic.
 * Gold is approximately 2.5 times denser than iron; and about 7.3 times denser than silica which is the main component of sand.
 * When Sunagakure was suffering dire economic strains, this gold dust was used as a valuable trade commodity of the village.