Jewels increase the probability of upgrade success. Most jewels can be obtained by processing mine, but some may be purchased at at the cash shop.
| Image | Item Name | Effect | Obtained from: |
 | Ruby | Barely Increases upgrade probability (T1) | Processing ore |
 | Light Ruby | Slightly increases upgrade probability (T2) | Processing ore |
 | Fire Ruby | Moderately increases upgrade probability (T3) | Processing ore |
 | Salamander Ruby | Greatly increases upgrade probability (T4) | Processing ore |
 | Lucky Ruby | Enormously increases upgrade probability (T5) |  Lucky Set of Gem Exchanger (Cash Shop) |
 | Shiny Ruby of Luck | Very Enormously increases upgrade probability (T6) |  Shiny Luck Jewel Coupon (Cash Shop) |
 | Brilliant Lucky Ruby | Extremely Enormously increases upgrade probability (T7) |  Briliant Gem Set Exchanger (Cash Shop) |
 | Crystal | Barely Increases upgrade probability (T1) | Processing ore |
 | Water Crystal | Slightly increases upgrade probability (T2) | Processing ore |
 | Ice Crystal | Moderately increases upgrade probability (T3) | Processing ore |
 | Angel’s Crystal | Greatly increases upgrade probability (T4) | Processing ore |
 | Lucky Crystal | Enormously increases upgrade probability (T5) | Lucky Set of Gem Exchanger (Cash Shop) |
 | Shiny Crystal of Luck | Very Enormously increases upgrade probability (T6) | Shiny Luck Jewel Coupon (Cash Shop) |
 | Brilliant Lucky Crystal | Extremely Enormously increases upgrade probability (T7) | Briliant Gem Set Exchanger (Cash Shop) |
 | Topaz | Barely Increases upgrade probability (T1) | Processing ore |
 | Terra Topaz | Slightly increases upgrade probability (T2) | Processing ore |
 | Poison Topaz | Moderately increases upgrade probability (T3) | Processing ore |
 | Land’s Topaz | Greatly increases upgrade probability (T4) | Processing ore |
 | Lucky Topaz | Enormously increases upgrade probability (T5) | Lucky Set of Gem Exchanger (Cash Shop) |
 | Shiny Gold Jade of Luck | Very Enormously increases upgrade probability (T6) | Shiny Luck Jewel Coupon (Cash Shop) |
 | Brilliant Lucky Topaz | Extremely Enormously increases upgrade probability (T7) | Briliant Gem Set Exchanger (Cash Shop) |
 | Obsidian | Barely Increases upgrade probability (T1) | Processing ore |
 | Lightning Obsidian | Slightly increases upgrade probability (T2) | Processing ore |
 | Wind Obsidian | Moderately increases upgrade probability (T3) | Processing ore |
 | Truth’s Obsidian | Greatly increases upgrade probability (T4) | Processing ore |
 | Lucky Obsidian | Enormously increases upgrade probability (T5) | Lucky Set of Gem Exchanger (Cash Shop) |
 | Shiny Black Jade of Luck | Very Enormously increases upgrade probability (T6) | Shiny Luck Jewel Coupon (Cash Shop) |
 | Brilliant Lucky Obsidian | Extremely Enormously increases upgrade probability (T7) | Briliant Gem Set Exchanger (Cash Shop) |
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