Diamond Ring

Source: npc/quests/quests_ayothaya.txt

1. Talk to fisherman Dannai at ayothaya 253,99 (thai_find == 1 branch).
2. Accept fishing with Yes.
3. Each try consumes Monster's Feed x1 and 50 zeny rod fee.
4. When RNG hits branch @randfish == 90, you get Diamond Ring.
5. If you pull another Phen reward, just repeat fishing.