"IV Stones can be found in caves and from the Pok\u00E9ball in the player's Secret Base. Once the player obtains the final Secret Base upgrade they will be able to buy them from a Mart Worker for $10,000 each."@en . . "IV Stone"@en . "IV Stones can be found in caves and from the Pok\u00E9ball in the player's Secret Base. Once the player obtains the final Secret Base upgrade they will be able to buy them from a Mart Worker for $10,000 each."@en .