Well let's start
HIGHER REFINE STONE: to create it we need to find some item EXE NVM the option's or if the item is +0 ~ +13 only need 1 item EXE
1st we go to refining and talk to Osbourne and press OK
Put the item EXE in the machine
And click in the button to change the item for the HIGHER REFINE STONE
If we have luck then the HIGHER REFINE STONE will be create and we dont lost the item and it will be ready to use in our item with Yellow Option
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LOWER REFINE STONE: to create it we need to find some item NON EXE +0 ~ +13
1st we go to refining and talk to Osbourne and press OK
Then put the item NON EXE in the machine
And click in the button to change the item for the LOWER REFINE STONE
If we have luck then the LOWER REFINE STONE will be create and we dont lost the item and it will be ready to use in our item with Yellow Option
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In this case i put to my item Yellow Option and i got Damage Decrement+3% but i nid to increase it to 7% then i used HIGHER REFINE STONE.
ADDITIONAL INFO:
• Better is create HIGHER REFINE STONE coz have more SUCCESS RATE to increase our item's with YELLOW OPTION