Mastermind

Mastermind is a challenge used in Survivor Down Under.

Rules & Explanation
his challenge is called Mastermind, and the point of the game is to arrange 12 gems in the right order. However, there are 25 gems to choose from. You may make guesses to the order in your host chat by listing 12 gem out in order. We will then take that order you guessed and use the symbols described below to give you information to help you get the correct order.

! - correct gem, correct position * - correct gem, wrong position x - wrong gem, wrong position

Each gem is only used once in the order. Each player has a different set of gem so that you may not cheat, even though it is against the rules.

The twenty-five gems you can choose from are these:
 * Sapphire
 * Amber
 * Amethyst
 * Pearl
 * Emerald
 * Lapis
 * Jade
 * Ruby
 * Opal
 * Moonstone
 * Topaz
 * Onyz
 * Agate
 * Peridot
 * Pyrite
 * Tanzanite
 * Aquamarine
 * Carnelian
 * Jasper
 * Citrine
 * Amazonite
 * Sunstone
 * Larimar
 * Spinel
 * Heliotrope

For example if the answer was: Carnelian, Spinel, Larimar

And you guessed: Carnelian, Larimar, Lapis you would get back:

! * x

You may take as long as you want in the challenge as long as you complete it by the deadline. And you just need to send guesses to the chat. Although please be patient with the hosts as they have jobs, if our schedules cause issue with you completing it let us know and we can work something out.

Whoever finds the correct list in the shortest amount of guesses will win immunity. You are not allowed to discuss the order of the gems and if you are caught doing so, you will be severely punished.