Red: [Sparkling Red Firestone], if the price is too high, you can use [Sparkling Hell Firestone].
Yellow: [reckless lava coral] (25 intelligence and 25 quickness), or [high-energy lava coral stone] (25 intelligence and 25 crit). If the price is too high, you can use reckless dark topaz or high-energy dark topaz.
Blue: [pure shadow spinel] (25 intelligence and 25 spirit). If the price is too high, you can use 【 Pure Devil's Eye 】.
Colorful: [Shadow of Ashes Diamond] is your best choice. If you choose to take the crit route and like to watch big numbers, [Burning Shadow Diamond] is a very good choice.
([Burning Shadow Diamond] has been proved to be a translation error, and the actual treatment effect has been improved.)
If you think the reward is not good, please ignore all slots and choose [Sparkling Red Firestone] or [Sparkling Hellfire].
Jewellery professionals, please change three rubies into "Eye of Chimera". The rest of the stones remain unchanged.
It should be noted that [Shadow of Ashes Diamond] needs two yellow gems to trigger, and [Shadow of Burning Diamond] needs three red gems to trigger.
So please use the corresponding gems in the slot that gives you intellectual rewards.