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Tap the slot and select the "fuse" option to upgrade your gemstone. To perform fusion, place three gemstones of the same type and rarity (for example, three Teardrop Rubies) into a single slot in your Inventory or Chest. Fusing gemstones will cost 25 gold from Rough to Common, 50 gold from Common to Teardrop, 100 from Teardrop to Radiant, 500 from Radiant to Trillion, and 2000 gold from Trillion to Brilliant. To obtain a Brilliant Gemstone, you will need either 243 Roughs, 81 Commons, 27 Teardrops, 9 Radiants, or 3 Trillions. Three gemstones of the same type and rarity can be fused into one single rarer gemstone. Contains an assortment of 9 gemstones, with one exceptionally powerful gemstone.
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Gemstones provide an instant elevation of certain attributes, which can make a large difference in either the offensive or defensive ability of your Hero, and subsequently influence individual playing styles. There is also the option of adding a socket to an item using Gems. Socketed gear can be found occasionally from Chests or dropped from defeated enemies. Sockets appear as small circles with gilded edges in the middle of the icons for items in the game. Gemstones are items that can be inserted into socketed gear to give your Hero attribute boosts.
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