The Legend of Zelda: Oracle of Ages/Rings

Ring basics
To begin collecting Rings, visit the jewellery store in Lynna City Horon Village and talk to the owner, Vasu. He will give you an L-1 Ring Box. This can only hold one Ring at a time (the rest he stores for you); you can eventually get an L-2 Ring Box (holds 3 Rings) or an L-3 Ring Box (holds 5 Rings). Once you have the Ring Box Vasu gives you the No. 1 Friendship Ring. He then teaches you how to appraise Rings. The first time his service is free, after that it's 20 Rupees per Ring.

When you find Rings they will be unusable and appear as a mere number in your inventory beside the icon. By returning to Vasu and having them appraise they become usable. You can only have one of each Ring in your collection; Vasu buys duplicates for 30 Rupees.

Once you have some Rings you can add them to your Ring Box by talking to Vasu and selecting "List". To equip a Ring, go into your inventory and activate it; an "E" shows you the ring is equipped and in effect.

Except for a handful that are only acquired in certain places all Rings can be acquired by various methods, including:
 * Planting a Gasha Seed and collecting the resulting Gasha Nut
 * Bumping into Maple and stealing any Rings she drops
 * From the Chest Game in Lynna City Horon Village

Ring list

 * Rings in brown are only found in Oracle of Ages
 * Rings in green are only found in Oracle of Seasons