Alchemist's amulet (charged)

The alchemist's amulet is an item obtained by using one or more Alchemist's amulet fragments, which are available on the Squeal of Fortune for the weekend of 7 September, to construct it. When constructed, the player is granted a number of coins based on the number of fragments used in tandem to construct it. Players only win one fragment at a time and may create their amulet with any number of fragments; however, each fragment increases the power to which the equation for the number of coins granted is raised following the formula 10,000 ×2 (f-1) where f is the number of fragments used for the amulet.

When using 10 fragments, the player will produce an alchemist's amulet (charged) which may be used to cast the High Level Alchemy spell on any spellbook without using any runes up to 10 times per day, so long as the player has at least 55 Magic. Note that these free casts are counted for each player and not each amulet; i.e. having 2 will not allot the player 20 free casts of high alchemy. Using any number less than the full ten fragments will produce an alchemist's amulet (uncharged), which may not be charged with any further fragments; however, players may gain more than 10 fragments and create more than one amulet.

Coins earned
The following chart displays the number of coins gained for construction of an amulet using fragments (x):